Anypoint Flex Gateway Release Notes

1.9.0

March 18, 2025

MuleSoft announces the release of Anypoint Flex Gateway 1.9.0.

What’s New

Managed Flex Gateway on CloudHub 2.0

Flex Gateway now includes Managed Flex Gatway, a fully hosted version of Flex Gateway on CloudHub 2.0. Managed Flex Gateway provides high availability, autoscaling, less operational overhead, and regular automatic patches and upgrades.

Note: To use Managed Flex Gateway, ensure the business group you want to deploy your gateway to has Managed Flex Gateway Resources.

See Deploy a Managed Flex Gateway to CloudHub 2.0.
Flex Gateway Version Lifecycle

MuleSoft introduces two new release channels, Edge and Long-term Support (LTS). Both release channels are available in all deployment models: Managed Flex Gateway, Self-Managed Flex Gateway Connected Mode, and Self-Managed Flex Gateway Local Mode. Edge releases will be available three times per year, and LTS releases will be available once a year.

See Flex Gateway Version Lifecycle.
Outbound Policy Support

Outbound policies are policies applied to specific upstreams. To find the new outbound policies, see Outbound Policies Directory.

To apply outbound policies with UI, see Applying Policies for Managed Flex Gateways and Connected Mode. To apply a policy to a service in Local Mode, see Secure an API with an Automated Resource-Level Policy.
Flex Local Configuration Cache

Flex Gateway running in Connected mode can now cache its gateway configuration in shared storage for faster replica initiation, reduced startup times, and accelerated autoscaling.

See Configuring Flex Gateway Configuration Caching in Connected Mode.
Flex Scalability

Flex Gateway now supports up to 1,000 APIs per gateway.
API Timeouts

Flex Gateway now provides the Stream Idle timeout, Response timeout, and Upstream Idle timeout. You can apply the timeouts to the gateway or individual APIs and upstreams as policies. To learn more, see:

Fixed Issues

Issue Resolution	ID
When deployed to a Virtual Machine (VM), a Self-Managed Flex Gateway no longer fails to restart after an abrupt stop of the VM.	W-17640917

Issue Resolution

When deployed to a Virtual Machine (VM), a Self-Managed Flex Gateway no longer fails to restart after an abrupt stop of the VM.

W-17640917

Known Issues

The Flex Gateway is unable to send logs when a forward proxy is enabled known issue Leaving the Site was introduced in Flex Gateway 1.9.0.

For more information, see Salesforce Known Issues Leaving the Site and set the category to Mulesoft Flex Gateway.

1.8.3

January 29, 2025

MuleSoft announces the release of Anypoint Flex Gateway 1.8.3.

What’s New

Flex Gateway now provides the FLEX_DOWNSTREAM_CONNECTION_BUFFER_LIMIT_BYTES environment variable to limit new connections read and write buffers. By default, the buffer limit is 1MB.
Flex Gateway now provides the FLEX_ENVOY_HEADERS_ENABLED environment variable to remove Envoy headers from requests. By default, the variable is set to false.
Integrated Runtime Logs in Runtime Manager

You can now access and manage Flex Gateway runtime logs directly within Runtime Manager, which streamlines diagnostics and improves operational efficiency.
Flex Gateway Security Best Practices

Flex Gateway documentation now has information about securing Flex clusters, including recommended practices for certificate management and storage.

Fixed Issues

Issue Resolution	ID
Vulnerabilities detected by scanners are now fixed.	W-17430713
The XSS vulnerability in the Schema Validation policy is now fixed.	W-17450881
Flex Gateway no longer requests client certificates when inbound mTLS isn’t enabled.	W-17424531

Issue Resolution

Vulnerabilities detected by scanners are now fixed.

W-17430713

The XSS vulnerability in the Schema Validation policy is now fixed.

W-17450881

Flex Gateway no longer requests client certificates when inbound mTLS isn’t enabled.

W-17424531

1.8.2

December 13, 2024

MuleSoft announces the release of Anypoint Flex Gateway 1.8.2.

What’s New

Envoy is now updated to version 1.29.9.
The External Authorization Policy now provides the Path prefix parameter to set a prefix to the value of the Path authorization request header.

See External Processing Policy.

Fixed Issues

Issue Resolution	ID
Vulnerabilities detected by scanners are now fixed.	W-16844648
The Message Logging policy now properly escapes double quotes.	W-16981526
Forward proxy credential configuration with special characters no longer fails.	W-17329371

Issue Resolution

Vulnerabilities detected by scanners are now fixed.

W-16844648

The Message Logging policy now properly escapes double quotes.

W-16981526

Forward proxy credential configuration with special characters no longer fails.

W-17329371

1.8.1

September 27, 2024

MuleSoft announces the release of Anypoint Flex Gateway 1.8.1.

What’s New

The External Processing policy now provides the Failure mode allow, Max message timeout, and Allow mode override parameters to further configure Flex Gateway’s communication with the external processing service.

See External Processing Policy.
The Flex Gateway documentation now provides Flex Gateway limits outlining Flex Gateway specifications for information such as max APIs per gateway, contracts per API, and request header payload size.

See Limits.

Fixed Issues

Issue Resolution ID

Issue Resolution	ID
The severity level of the `Details are not recognized as violation` message is decreased from `WARN` to `DEBUG`.	W-15844673
Vulnerabilities detected by scanners are now fixed.	W-16844648

The severity level of the Details are not recognized as violation message is decreased from WARN to DEBUG.

W-15844673

Vulnerabilities detected by scanners are now fixed.

W-16844648

1.8.0

August 14, 2024

MuleSoft announces the release of Anypoint Flex Gateway 1.8.0.

What’s New

Flex Gateway now provides a readiness probe to ensure that a Flex Replica is configured correctly and ready for incoming traffic. Use the readiness probe to enable external entities, such as load balancers, to perform gateway health checks to ensure traffic only reaches healthy gateways.

See Configuring a Readiness or Liveness Probe.
The Flex Gateway documentation now provides architecture diagrams detailing best practices for multiple-region, high availability, and disaster recovery deployments.

See Flex Gateway Multiple Region Deployments.
Flex Gateway deployments deployed in Docker containers are now distroless images. Distroless images improve security by only containing the essential runtime components to reduce potential attack surface.
The JWT Validation Policy now supports multiple JWKS servers.

See JWT Validation Policy.
The Mastering API Integration: Salesforce, Heroku, and MuleSoft Anypoint Flex Gateway blog provides details for running Flex Gateway on the Heroku platform.
Fluent Bit is now updated to version 3.0.6.
Flex Gateway no longer supports Ubuntu Bionic, Debian Buster, and RHEL 8.

Fixed Issues

Issue Resolution ID

Issue Resolution	ID
Flex Gateway now enables you to remove the `Server` header via the `FLEX_REMOVE_SERVER_HEADER` environment variable.	W-13961645
Flex Gateway no longer fails to download assets from Anypoint Platform after an upgrade or downgrade.	W-15665983
Flex Gateway no longer fails to start after an upgrade on RPM-based systems.	W-16285842
The JSON Threat Protection policy no longer fails on Windows systems when the payload contains escape characters.	W-16124513

Flex Gateway now enables you to remove the Server header via the FLEX_REMOVE_SERVER_HEADER environment variable.

W-13961645

Flex Gateway no longer fails to download assets from Anypoint Platform after an upgrade or downgrade.

W-15665983

Flex Gateway no longer fails to start after an upgrade on RPM-based systems.

W-16285842

The JSON Threat Protection policy no longer fails on Windows systems when the payload contains escape characters.

W-16124513

1.7.2

August 27, 2024

MuleSoft announces the release of Anypoint Flex Gateway 1.7.2.

Fixed Issues

Issue Resolution	ID
Vulnerabilities detected by scanners are now fixed.	W-16188012
The JSON Threat Protection policy no longer fails on Windows systems when the payload contains escape characters.	W-16124513
Flex Gateway no longer crashes when an API instance name exceeds the 50 character limit.	W-15941334

Issue Resolution

Vulnerabilities detected by scanners are now fixed.

W-16188012

The JSON Threat Protection policy no longer fails on Windows systems when the payload contains escape characters.

W-16124513

Flex Gateway no longer crashes when an API instance name exceeds the 50 character limit.

W-15941334

1.7.1

June 26, 2024

MuleSoft announces the release of Anypoint Flex Gateway 1.7.1.

What’s New

Flex Gateway now supports SUSE Linux Enterprise 15 for x86_64 and IBM PowerPC (ppc64le) architectures.

For more information, refer to Downloading Flex Gateway.
The Message Logging policy now supports additional DataWeave expressions.

For more information, refer to Message Logging Policy DataWeave Support.
Configure the FLEX_FORWARD_CLIENT_CERT_DETAILS environment variable to handle x-forwarded-client-cert (XFCC) HTTP headers. Possible values include the following strings:
- SANITIZE
- FORWARD_ONLY
- APPEND_FORWARD
- SANITIZE_SET
- ALWAYS_FORWARD_ONLY
  
  The FLEX_FORWARD_CLIENT_CERT_DETAILS environment variable configuration applies to all API instances.
  
  For more information, refer to Envoy documentation.

Fixed Issues

Issue Resolution ID

Issue Resolution	ID
Flex Gateway certificate renewal command no longer fails.	W-15870723
Flex Gateway no longer fails when an upstream uses the `P-384` or `P-521` ECDH curves.	W-15666251
Vulnerabilities detected by scanners are now fixed.	W-15895967
Flex Gateway running in Connected Mode no longer fails if an asset name is too long.	W-15941334
The severity level of the `Details are not recognized as violation` message is decreased from `WARN` to `DEBUG`.	W-15844673
Flex Gateway no longer supports the TLS_RSA_WITH_NULL_SHA cipher because Envoy stopped supporting the cipher.	W-16151550

Flex Gateway certificate renewal command no longer fails.

W-15870723

Flex Gateway no longer fails when an upstream uses the P-384 or P-521 ECDH curves.

W-15666251

Vulnerabilities detected by scanners are now fixed.

W-15895967

Flex Gateway running in Connected Mode no longer fails if an asset name is too long.

W-15941334

The severity level of the Details are not recognized as violation message is decreased from WARN to DEBUG.

W-15844673

Flex Gateway no longer supports the TLS_RSA_WITH_NULL_SHA cipher because Envoy stopped supporting the cipher.

W-16151550

1.7.0

May 6, 2024

MuleSoft announces the release of Anypoint Flex Gateway 1.7.0.

What’s New

Flex Gateway now supports RHEL 9 for IBM PowerPC (ppc64le) architecture.

For more information, refer to Downloading Flex Gateway.
Flex Gateway now supports Debian Bookworm and Amazon Linux 2023.
Flex Gateway no longer supports Amazon Linux 2.
Flex Gateway now supports the following container orchestration services:
- Amazon Elastic Container Service (Amazon ECS)
- Azure Container Service (ACS)
- Google Cloud Run
- AWS Fargate
The flexctl check connections command enables debugging issues with network and registration.

For more information, refer to Troubleshoot Platform Connections.
The flexctl check http command enables client URL requests.

For more information, refer to Troubleshooting Request Connection.
External Authorization policy now supports configuring upstream headers and timeouts.
Envoy is now updated to version 1.29.3.
Fluent Bit is now updated to version 2.0.11.

Fixed Issues

Issue Resolution ID

Issue Resolution	ID
Flex Gateway now sends logs under Anypoint Platform downtime conditions.	W-14899674
Flex Gateway now sets the log lines date correctly in VMs.	W-14659532
OAuth policy no longer fails to initialize in the ABI WASM.	W-14388776
Client ID Enforcement policy no longer uses a different shared data partition when a new policy instance is added.	W-14584415
HTTP Caching policy no longer generates a duplicate serialization.	W-14557325
OAS policy no longer tries to deserialize non-YAML or non-JSON files.	W-15243907
Flex Gateway no longer fails when the same TLS context is used for inbound and outbound requests.	W-14328663
The default connection timeout is now increased to 5 seconds.	W-14865784
Vulnerabilities detected by scanners are now fixed.	W-14856151
The performance of config processing is improved.	W-14821830
Flex Gateway now properly handles removed contracts.	W-14920631
Schema Validation policy now returns a 404 status code for resources that do not exist in the API specification.	W-14801480
Rate Limit policy defined using a Selector in Local Mode no longer applies an incorrect quota when matching multiple APIs.	W-13797100
Message Logging policy now attempts to parse messages using Windows-1252 charset if it fails to parse messages as UTF-8.	W-14801403
Flex Gateway now blocks traffic when a policy can’t be applied.	W-14669249
Fixed vulnerabilities detected by security scanners.	W-14686172
Flex Gateway now prevents files from being automatically deleted during OS cleanup.	W-14583807
The `flexctl dump` command no longer shows an error when there are no resources to dump.	W-11194730
Healthcheck policy no longer fails if Flex Gateway is installed on a namespace other than `default`.	W-14506137
OAS policy no longer fails when attempting to define an `enum` for integers.	W-14496441
Healthcheck and JWT Validation policies no longer use HTTP for external requests when on TLS.	W-14389347
Logging policy now correctly handles DataWeave expressions with variables returning `null`.	W-14423354
Header Removal policy is now able to remove the `Accept` header.	W-14417832
Logging policy no longer fails when trying to print a log with non-utf8 characters.	W-14707180
Flex Gateway now force-kills Fluent Bit ten seconds after a term signal is sent.	W-14189688
Flex Gateway no longer sends empty log lines to the platform.	W-14658813
Flex Gateway no longer supports the TLS_RSA_WITH_NULL_SHA cipher because Envoy stopped supporting the cipher.	W-16151550

Flex Gateway now sends logs under Anypoint Platform downtime conditions.

W-14899674

Flex Gateway now sets the log lines date correctly in VMs.

W-14659532

OAuth policy no longer fails to initialize in the ABI WASM.

W-14388776

Client ID Enforcement policy no longer uses a different shared data partition when a new policy instance is added.

W-14584415

HTTP Caching policy no longer generates a duplicate serialization.

W-14557325

OAS policy no longer tries to deserialize non-YAML or non-JSON files.

W-15243907

Flex Gateway no longer fails when the same TLS context is used for inbound and outbound requests.

W-14328663

The default connection timeout is now increased to 5 seconds.

W-14865784

Vulnerabilities detected by scanners are now fixed.

W-14856151

The performance of config processing is improved.

W-14821830

Flex Gateway now properly handles removed contracts.

W-14920631

Schema Validation policy now returns a 404 status code for resources that do not exist in the API specification.

W-14801480

Rate Limit policy defined using a Selector in Local Mode no longer applies an incorrect quota when matching multiple APIs.

W-13797100

Message Logging policy now attempts to parse messages using Windows-1252 charset if it fails to parse messages as UTF-8.

W-14801403

Flex Gateway now blocks traffic when a policy can’t be applied.

W-14669249

Fixed vulnerabilities detected by security scanners.

W-14686172

Flex Gateway now prevents files from being automatically deleted during OS cleanup.

W-14583807

The flexctl dump command no longer shows an error when there are no resources to dump.

W-11194730

Healthcheck policy no longer fails if Flex Gateway is installed on a namespace other than default.

W-14506137

OAS policy no longer fails when attempting to define an enum for integers.

W-14496441

Healthcheck and JWT Validation policies no longer use HTTP for external requests when on TLS.

W-14389347

Logging policy now correctly handles DataWeave expressions with variables returning null.

W-14423354

Header Removal policy is now able to remove the Accept header.

W-14417832

Logging policy no longer fails when trying to print a log with non-utf8 characters.

W-14707180

Flex Gateway now force-kills Fluent Bit ten seconds after a term signal is sent.

W-14189688

Flex Gateway no longer sends empty log lines to the platform.

W-14658813

Flex Gateway no longer supports the TLS_RSA_WITH_NULL_SHA cipher because Envoy stopped supporting the cipher.

W-16151550

1.6.2

February 29, 2024

MuleSoft announces the release of Anypoint Flex Gateway 1.6.2.

What’s New

Flex Gateway now supports Debian Bookworm.

Fixed Issues

Issue Resolution	ID
The default connection timeout is now increased to 5 seconds.	W-14865784
Vulnerabilities detected by scanners are now fixed.	W-14856151
The performance of config processing is improved.	W-14821830
Flex Gateway now properly handles removed contracts.	W-14920631
Schema Validation policy now returns a 404 status code for resources that do not exist in the API specification.	W-14801480
Rate Limit policy defined using a Selector in Local Mode no longer applies an incorrect quota when matching multiple APIs.	W-13797100
Message Logging policy now attempts to parse messages using Windows-1252 charset if it fails to parse messages as UTF-8.	W-14801403
Flex Gateway no longer crashes when configuring the External Authentication policy’s Allowed headers parameter.	W-15058123

Issue Resolution

The default connection timeout is now increased to 5 seconds.

W-14865784

Vulnerabilities detected by scanners are now fixed.

W-14856151

The performance of config processing is improved.

W-14821830

Flex Gateway now properly handles removed contracts.

W-14920631

Schema Validation policy now returns a 404 status code for resources that do not exist in the API specification.

W-14801480

Rate Limit policy defined using a Selector in Local Mode no longer applies an incorrect quota when matching multiple APIs.

W-13797100

Message Logging policy now attempts to parse messages using Windows-1252 charset if it fails to parse messages as UTF-8.

W-14801403

Flex Gateway no longer crashes when configuring the External Authentication policy’s Allowed headers parameter.

W-15058123

1.6.1

January 10, 2024

MuleSoft announces the release of Anypoint Flex Gateway 1.6.1.

Fixed Issues

Issue Resolution ID

Issue Resolution	ID
Flex Gateway now blocks traffic when a policy cannot be applied.	W-14669249
Fixed vulnerabilities detected by security scanners.	W-14686172
Flex Gateway now prevents files from being automatically deleted during OS cleanup.	W-14583807
The `flexctl dump` command no longer shows an error when there are no resources to dump.	W-11194730
Healthcheck policy no longer fails if Flex Gateway is installed on a namespace other than `default`.	W-14506137
OAS policy no longer fails when attempting to define an `enum` for integers.	W-14496441
Healthcheck and JWT Validation policies no longer use HTTP for external requests when on TLS.	W-14389347
Logging policy now correctly handles DataWeave expressions with variables returning `null`.	W-14423354
Header Removal policy is now able to remove the `Accept` header.	W-14417832
Logging policy no longer fails when trying to print a log with non-utf8 characters.	W-14707180
Flex Gateway now force-kills Fluent Bit ten seconds after a term signal is sent.	W-14189688
Flex Gateway no longer sends empty log lines to the platform.	W-14658813

Flex Gateway now blocks traffic when a policy cannot be applied.

W-14669249

Fixed vulnerabilities detected by security scanners.

W-14686172

Flex Gateway now prevents files from being automatically deleted during OS cleanup.

W-14583807

The flexctl dump command no longer shows an error when there are no resources to dump.

W-11194730

Healthcheck policy no longer fails if Flex Gateway is installed on a namespace other than default.

W-14506137

OAS policy no longer fails when attempting to define an enum for integers.

W-14496441

Healthcheck and JWT Validation policies no longer use HTTP for external requests when on TLS.

W-14389347

Logging policy now correctly handles DataWeave expressions with variables returning null.

W-14423354

Header Removal policy is now able to remove the Accept header.

W-14417832

Logging policy no longer fails when trying to print a log with non-utf8 characters.

W-14707180

Flex Gateway now force-kills Fluent Bit ten seconds after a term signal is sent.

W-14189688

Flex Gateway no longer sends empty log lines to the platform.

W-14658813

1.6.0

November 29, 2023

MuleSoft announces the release of Anypoint Flex Gateway 1.6.0.

What’s New

A Flex Gateway instance now supports 600 APIs.
The certificate that Flex Gateway uses to connect to Anypoint Platform expires January 15th, 2024. You can ensure the continued operation of your applications by renewing registration. Flex Gateway now includes two CLI commands:
- To renew your registration, use flexctl registration renew.
- To verify (inspect) the status of your registration certificate, use flexctl registration inspect.
For information about these CLI commands, refer to Renewing Flex Gateway Registration.
You can now configure Flex Gateway to send formatted runtime and access logs to a Dynatrace environment HTTP output.
- For Flex Gateway running in Connected Mode, refer to Configuring Flex Gateway Log Output for Third-Party Services.
- For Flex Gateway running in Local Mode, refer to Configuring External Logs for Flex Gateway in Local Mode.
You can now configure connection idle timeout through the FLEX_CONNECTION_IDLE_TIMEOUT_SECONDS environment variable.
Envoy is now updated to version 1.25.16.
Flex Gateway now supports configuring shared storage with Redis Sentinel.

For Flex Gateway running in Connected Mode, refer to Configuring Shared Storage for Flex Gateway in Connected Mode.

For Flex Gateway running in Local Mode, refer to Configuring Shared Storage for Flex Gateway in Local Mode.
You can now disable log forwarding to Anypoint Platform via the logging.runtimeLogs.outputs.default and logging.accessLogs.outputs.default options in the Configuration resource.

For more information, refer to Disabling Flex Gateway Log Output to Anypoint Platform.
Flex Gateway now supports forwarding incoming client HTTP requests to an external authentication service.

For more information, refer to External Authorization Policy
Flex Gateway now supports forwarding HTTP requests or responses to an external gRPC service, for applying transformations.

For more information, refer to External Processing Policy

Fixed Issues

Issue Resolution ID

Issue Resolution	ID
Policies making external HTTP requests now include a `User-Agent` header.	W-13824390
Upgrading Flex Gateway in a VM now correctly upgrades policies.	W-13837035
Downloading custom policies no longer fails when a forwarding proxy is used.	W-13887045
Fixed vulnerabilities detected by security scanners.	W-13804226
The Header Removal policy can now remove the `User-Agent` header.	W-1393110
Flex Gateway now supports configuring `stream_idle_timeout` through the `FLEX_STREAM_IDLE_TIMEOUT_SECONDS` environment variable.	W-13952107
Flex Gateway no longer fails when a long regex is used in path matching.	W-13969574
The Message Logging policy no longer freezes when the JSON payload is over a certain size.	W-13873251
Flex Gateway now uses legacy DNS resolver in Fluent Bit to reduce timeout errors.	W-14067930
Flex Gateway no longer fails due to corrupted Fluent Bit chunks.	W-14111714
The Fluent Bit process now only restarts when required.	W-14149240
The OAuth 2.0 Token Introspection policy no longer uses HTTP when on TLS and the authority now contains the port for external requests.	W-14337518
To work with legacy systems, the JWT Validation policy now accepts floats for the `exp` field.	W-14274716
The Header Removal policy is now able to remove the `x-forwarded-proto` header.	W-14262338
Flex Gateway now fails if an invalid regex is used while configuring routing conditions.	W-13966293
Flex Gateway no longer fails when defining an invalid policies list in the `ApiInstance` resource.	W-14162165
Flex Gateway no longer experiences downtime with Redis when the Redis configuration is unchanged.	W-13946014
Flex Gateway no longer fails when the Exchange asset name contains non-supported characters.	W-12720868
Flex Gateway now correctly fails when using a non-supported `apiVersion`.	W-13965772

Policies making external HTTP requests now include a User-Agent header.

W-13824390

Upgrading Flex Gateway in a VM now correctly upgrades policies.

W-13837035

Downloading custom policies no longer fails when a forwarding proxy is used.

W-13887045

Fixed vulnerabilities detected by security scanners.

W-13804226

The Header Removal policy can now remove the User-Agent header.

W-1393110

Flex Gateway now supports configuring stream_idle_timeout through the FLEX_STREAM_IDLE_TIMEOUT_SECONDS environment variable.

W-13952107

Flex Gateway no longer fails when a long regex is used in path matching.

W-13969574

The Message Logging policy no longer freezes when the JSON payload is over a certain size.

W-13873251

Flex Gateway now uses legacy DNS resolver in Fluent Bit to reduce timeout errors.

W-14067930

Flex Gateway no longer fails due to corrupted Fluent Bit chunks.

W-14111714

The Fluent Bit process now only restarts when required.

W-14149240

The OAuth 2.0 Token Introspection policy no longer uses HTTP when on TLS and the authority now contains the port for external requests.

W-14337518

To work with legacy systems, the JWT Validation policy now accepts floats for the exp field.

W-14274716

The Header Removal policy is now able to remove the x-forwarded-proto header.

W-14262338

Flex Gateway now fails if an invalid regex is used while configuring routing conditions.

W-13966293

Flex Gateway no longer fails when defining an invalid policies list in the ApiInstance resource.

W-14162165

Flex Gateway no longer experiences downtime with Redis when the Redis configuration is unchanged.

W-13946014

Flex Gateway no longer fails when the Exchange asset name contains non-supported characters.

W-12720868

Flex Gateway now correctly fails when using a non-supported apiVersion.

W-13965772

1.5.4

November 08, 2023

MuleSoft announces the release of Anypoint Flex Gateway 1.5.4.

What’s New

You can now configure connection idle timeout through the FLEX_CONNECTION_IDLE_TIMEOUT_SECONDS environment variable.
Envoy is now updated to version 1.25.3.

Fixed Issues

Issue Resolution ID

Issue Resolution	ID
The Fluent Bit process now only restarts when required.	W-14149240
Vulnerabilities detected by security scanners are fixed.	W-14355714
The OAuth 2.0 Token Introspection policy no longer uses HTTP when on TLS and the authority now contains the port for external requests.	W-14337518
To work with legacy systems, the JWT Validation policy now accepts floats for the `exp` field.	W-14274716
The Header Removal policy is now able to remove the `x-forwarded-proto` header.	W-14262338
The Message Logging policy no longer freezes when the JSON payload is over a certain size.	W-13873251
Flex Gateway now fails if an invalid regex is used while configuring routing conditions.	W-13966293
Flex Gateway no longer fails when defining an invalid policies list in the `ApiInstance` resource.	W-14162165
The `flexctl registration create` and `flexctl registration renew` commands no longer generate empty registration files on error.	W-14415582
Flex Gateway no longer experiences downtime with Redis when the Redis configuration is unchanged.	W-13946014

The Fluent Bit process now only restarts when required.

W-14149240

Vulnerabilities detected by security scanners are fixed.

W-14355714

The OAuth 2.0 Token Introspection policy no longer uses HTTP when on TLS and the authority now contains the port for external requests.

W-14337518

To work with legacy systems, the JWT Validation policy now accepts floats for the exp field.

W-14274716

The Header Removal policy is now able to remove the x-forwarded-proto header.

W-14262338

The Message Logging policy no longer freezes when the JSON payload is over a certain size.

W-13873251

Flex Gateway now fails if an invalid regex is used while configuring routing conditions.

W-13966293

Flex Gateway no longer fails when defining an invalid policies list in the ApiInstance resource.

W-14162165

The flexctl registration create and flexctl registration renew commands no longer generate empty registration files on error.

W-14415582

Flex Gateway no longer experiences downtime with Redis when the Redis configuration is unchanged.

W-13946014

1.5.3

October 04, 2023

MuleSoft announces the release of Anypoint Flex Gateway 1.5.3.

What’s New

The certificate that Flex Gateway uses to connect to Anypoint Platform expires January 15th, 2024. You can ensure the continued operation of your applications by renewing registration. Flex Gateway now includes two CLI commands:
- To renew your registration, use flexctl registration renew.
- To verify (inspect) the status of your registration certificate, use flexctl registration inspect.
For information about these CLI commands, refer to Renewing Flex Gateway Registration.
You can now configure Flex Gateway to send formatted runtime and access logs to a Dynatrace environment HTTP output.
- For Flex Gateway running in Connected Mode, refer to Configuring Flex Gateway Log Output for Third-Party Services.
- For Flex Gateway running in Local Mode, refer to Configuring External Logs for Flex Gateway in Local Mode.

Fixed Issues

Issue Resolution	ID
Flex Gateway no longer fails when a long regex is used in path matching.	W-13969574
The Message Logging policy no longer freezes when the JSON payload is over a certain size.	W-13873251
Flex Gateway now uses legacy DNS resolver in Fluent Bit to reduce timeout errors.	W-14067930
Flex Gateway no longer fails due to corrupted Fluent Bit chunks.	W-14111714

Issue Resolution

Flex Gateway no longer fails when a long regex is used in path matching.

W-13969574

The Message Logging policy no longer freezes when the JSON payload is over a certain size.

W-13873251

Flex Gateway now uses legacy DNS resolver in Fluent Bit to reduce timeout errors.

W-14067930

Flex Gateway no longer fails due to corrupted Fluent Bit chunks.

W-14111714

1.5.2

August 30, 2023

MuleSoft announces the release of Anypoint Flex Gateway 1.5.2.

Fixed Issues

Issue Resolution ID

Issue Resolution	ID
Policies making external HTTP requests now include a `User-Agent` header.	W-13824390
Upgrading Flex Gateway in a VM now correctly upgrades policies.	W-13837035
Downloading custom policies no longer fails when a forwarding proxy is used.	W-13887045
Fixed vulnerabilities detected by security scanners.	W-13804226
The Header Removal policy can now remove the `User-Agent` header.	W-1393110
Flex Gateway now supports configuring `stream_idle_timeout` through the `FLEX_STREAM_IDLE_TIMEOUT_SECONDS` environment variable.	W-13952107

Policies making external HTTP requests now include a User-Agent header.

W-13824390

Upgrading Flex Gateway in a VM now correctly upgrades policies.

W-13837035

Downloading custom policies no longer fails when a forwarding proxy is used.

W-13887045

Fixed vulnerabilities detected by security scanners.

W-13804226

The Header Removal policy can now remove the User-Agent header.

W-1393110

Flex Gateway now supports configuring stream_idle_timeout through the FLEX_STREAM_IDLE_TIMEOUT_SECONDS environment variable.

W-13952107

1.5.1

July 24, 2023

MuleSoft announces the release of Anypoint Flex Gateway 1.5.1.

Fixed Issues

Issue Resolution	ID
Flex Gateway now correctly shows policy violations in Monitoring Center.	W-13804327

Issue Resolution

Flex Gateway now correctly shows policy violations in Monitoring Center.

W-13804327

1.5.0

July 20, 2023

MuleSoft announces the release of Anypoint Flex Gateway 1.5.0.

What’s New

Flex Gateway now supports conditional API routing from one proxy to multiple endpoints.
Flex Gateway now supports TLS for Redis-based shared storage.
Flex Gateway now supports the Podman container runtime.
- Download Flex Gateway
Fluent Bit is now updated to version 2.0.9.
Envoy is now updated to version 1.25.2.
Schema Validation policy now generates more verbose logs to help with troubleshooting.
Schema Validation policy now shows meaningful information on the response after schema validation failure.
Schema Validation policy now resolves references ($ref) in schemas, up to a 10-level depth.

Fixed Issues

Issue Resolution ID

Issue Resolution	ID
API Manager now correctly shows message logs for Flex Gateway running in Connected Mode.	W-12658860
Resource creation no longer fails due to a name length error for Flex Gateway running in Connected Mode.	W-12667439
The JSON Threat Protection policy no longer considers valid JSON payloads invalid.	W-12594181,W-12594229
API Manager and Monitoring Center now correctly format message logs for Flex Gateway running in Connected Mode.	W-12637178
Flex dump now includes Service policies.	W-12736424
OAS schema is now downloaded once.	W-12636298
Schema Validation Policy now returns a JSON response on failure.	W-12740457
Schema Validation Policy headers and query parameters validation is now case insensitive.	W-12636158
Rate Limiting: SLA-Based Policy now refreshes tiers correctly.	W-12651022
Flex Gateway no longer fails after deleting an API Instance with applied policies in Connected Mode.	W-11731962
The PolicyBinding `spec.targetRef` field is now correctly validated.	W-12347158
The Fluent Bit default buffer size has been increased.	W-12489632
ALPN is now respected when establishing a TLS connection to upstream services.	W-12285581
Ingress classes are now respected by the `Ingress.ingressClassName` field.	W-12726534
Already applied deployments from Connected Mode are no longer reprocessed.	W-12727484
OpenID Connect OAuth 2.0 Token Enforcement Policy no longer fails on token validation when used with a REST API in Connected Mode.	W-13091548
Flex Gateway no longer initiates a new connection when deployment parsing fails.	W-13039766
Flex Gateway no longer creates multiple replicas in Runtime Manager when there are changes in the networking configuration.	W-12976264
Flex Gateway pods in Kubernetes no longer freeze if the process crashes.	W-12289578
Schema Validation Policy no longer throws an invalid bad request error when another API is updated on the same port.	W-13081833, W-13080942
Flex Gateway no longer crashes due to a memory leak in Fluent Bit.	W-13071770
Forward Proxy with outbound TLS policies no longer crashes.	W-13498787
JWT Validation policy no longer fails when using a token with the `x5t` field.	W-13074446
Schema Validation policy no longer floods logs when failing to parse a specification.	W-12636271
Schema Validation policy no longer fails to match the correct path when similar paths are defined.	W-13599735
Schema Validation policy now correctly handles encoded paths and parameters.	W-13599735
Schema Validation policy now avoids re-fetching of specifications when possible.	W-13217895
Schema Validation policy no longer rejects requests with content types containing properties.	W-13639309
CORS policy now allows the `X-Forwarded-For` header for simple requests.	W-13603025
Flex Gateway stops properly after the exit signal is received if the registration file is missing or incorrect.	W-13636262
Custom policies in Connected Mode no longer fail with "invalid character '<' looking for beginning of value".	W-13736558

API Manager now correctly shows message logs for Flex Gateway running in Connected Mode.

W-12658860

Resource creation no longer fails due to a name length error for Flex Gateway running in Connected Mode.

W-12667439

The JSON Threat Protection policy no longer considers valid JSON payloads invalid.

W-12594181,W-12594229

API Manager and Monitoring Center now correctly format message logs for Flex Gateway running in Connected Mode.

W-12637178

Flex dump now includes Service policies.

W-12736424

OAS schema is now downloaded once.

W-12636298

Schema Validation Policy now returns a JSON response on failure.

W-12740457

Schema Validation Policy headers and query parameters validation is now case insensitive.

W-12636158

Rate Limiting: SLA-Based Policy now refreshes tiers correctly.

W-12651022

Flex Gateway no longer fails after deleting an API Instance with applied policies in Connected Mode.

W-11731962

The PolicyBinding spec.targetRef field is now correctly validated.

W-12347158

The Fluent Bit default buffer size has been increased.

W-12489632

ALPN is now respected when establishing a TLS connection to upstream services.

W-12285581

Ingress classes are now respected by the Ingress.ingressClassName field.

W-12726534

Already applied deployments from Connected Mode are no longer reprocessed.

W-12727484

OpenID Connect OAuth 2.0 Token Enforcement Policy no longer fails on token validation when used with a REST API in Connected Mode.

W-13091548

Flex Gateway no longer initiates a new connection when deployment parsing fails.

W-13039766

Flex Gateway no longer creates multiple replicas in Runtime Manager when there are changes in the networking configuration.

W-12976264

Flex Gateway pods in Kubernetes no longer freeze if the process crashes.

W-12289578

Schema Validation Policy no longer throws an invalid bad request error when another API is updated on the same port.

W-13081833, W-13080942

Flex Gateway no longer crashes due to a memory leak in Fluent Bit.

W-13071770

Forward Proxy with outbound TLS policies no longer crashes.

W-13498787

JWT Validation policy no longer fails when using a token with the x5t field.

W-13074446

Schema Validation policy no longer floods logs when failing to parse a specification.

W-12636271

Schema Validation policy no longer fails to match the correct path when similar paths are defined.

W-13599735

Schema Validation policy now correctly handles encoded paths and parameters.

W-13599735

Schema Validation policy now avoids re-fetching of specifications when possible.

W-13217895

Schema Validation policy no longer rejects requests with content types containing properties.

W-13639309

CORS policy now allows the X-Forwarded-For header for simple requests.

W-13603025

Flex Gateway stops properly after the exit signal is received if the registration file is missing or incorrect.

W-13636262

Custom policies in Connected Mode no longer fail with "invalid character '<' looking for beginning of value".

W-13736558