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Logged-Out SSO Cookie Tracking, mpHealth REST Endpoint Controls, and more in 26.0.0.7

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Navaneeth S Nair on Jul 14, 2026
Post available in languages: 日本語 ,

This release enables logged-out SSO cookie tracking by default to prevent cookie replay after logout and adds an option to disable mpHealth REST endpoints when file-based health checks are enabled.

In Open Liberty 26.0.0.7:

Along with the new features and functions added to the runtime, we’ve also made updates to our guides.

View the list of fixed bugs in 26.0.0.7.

Develop and run your apps using 26.0.0.7

If you’re using Maven, include the following in your pom.xml file:

<plugin>
    <groupId>io.openliberty.tools</groupId>
    <artifactId>liberty-maven-plugin</artifactId>
    <version>3.12.0</version>
</plugin>

Or for Gradle, include the following in your build.gradle file:

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'io.openliberty.tools:liberty-gradle-plugin:4.0.0'
    }
}
apply plugin: 'liberty'

Or if you’re using container images:

FROM icr.io/appcafe/open-liberty

Or take a look at our Downloads page.

If you’re using IntelliJ IDEA, Visual Studio Code or Eclipse IDE, you can also take advantage of our open source Liberty developer tools to enable effective development, testing, debugging and application management all from within your IDE.

Ask a question on Stack Overflow

Liberty container images updated to UBI 10 Minimal

Beginning with Open Liberty 26.0.0.7, all Liberty container images based on UBI Minimal (-ubi-minimal tags) are now built on Red Hat Universal Base Image (UBI) 10 Minimal instead of UBI 9 Minimal. The container image tag names remain unchanged, so no updates to image references are required.

This update helps improve the security posture of Liberty container images because security fixes for operating system packages are often available earlier in UBI 10 Minimal, reducing the number of reported CVEs in the resulting images.

Existing Liberty releases prior to 26.0.0.7 continue to use UBI 9 Minimal. For example, 26.0.0.6 remains on UBI 9 Minimal and will continue to receive operating system and Java security updates through its supported lifecycle.

Users should verify that any build and runtime environments are compatible with the underlying UBI 10 / RHEL 10 base.

For more information, see the announcement and documentation.

To continuously improve built-in security for applications, Open Liberty 26.0.0.7 now enables the tracking of logged-out Single Sign-On (SSO) cookies by default. With this feature, logged-out SSO cookies can no longer be replayed after logout.

What is the potential impact?

When a logged-out SSO cookie is replayed, the user is explicitly prompted to reauthenticate, helping to harden application security.

Tracking logged-out SSO cookies can still be disabled with the following server configuration:

<webAppSecurity trackLoggedOutSSOCookies="false"/>

For more information, check out the tracking logged-out SSO cookies documentation.

Disabling mpHealth-4.0 REST endpoints when file-based health checks are enabled

The mpHealth-4.0 feature adds MicroProfile Health 4.0 support to Open Liberty. The feature includes a file-based health check mechanism as an alternative to the /health REST endpoints. When the file-based health check mechanism is enabled, you can disable the /health/started, /health/live, and /health/ready REST endpoints using server configuration attributes.

Previously, when file-based health checks were enabled, the REST-based MicroProfile Health endpoints were still registered and accessible. This behavior was often redundant for Kubernetes deployments that rely on file-based health checks, where users typically configure probes using the exec strategy rather than httpGet or gRPC. In these scenarios, the REST health endpoints are not used.

To address this redundancy, this release introduces a new optional enableEndpoints="false" attribute on the mpHealth server configuration element in server.xml file. An equivalent environment variable, MP_HEALTH_ENABLE_ENDPOINTS=false, is also supported.

When this option is set to false and file-based health checks are enabled, the server does not register or expose the MicroProfile Health REST endpoints (/health, /health/live, /health/ready, /health/started). Requests to these endpoints return a '404 Not Found' response.

File-based health checks can be enabled with the checkInterval configuration attribute or the MP_HEALTH_CHECK_INTERVAL environment variable.

If both the environment variable and server.xml configuration are specified, the server.xml setting takes precedence at runtime.

<server>
    <featureManager>
        <feature>mpHealth-4.0</feature>
    </featureManager>

    <!-- Enable file-based health checks but disable HTTP endpoints -->
    <mpHealth startupCheckInterval="1s" checkInterval="5s" enableEndpoints="false" />
 ...
</server>

If the enableEndpoints configuration attribute or the MP_HEALTH_ENABLE_ENDPOINTS environment variable is not set, the default value is true and the health check REST endpoints are enabled and exposed.

Note: This capability is supported only when the file‑based health check mechanism is enabled. If file-based health checks are not enabled and the enableEndpoints configuration attribute or environment variable is specified, a warning message is logged. The REST health endpoints remain enabled by default.

For more information, see the documentation.

Security vulnerability (CVE) fixes in this release

CVE CVSS Score Vulnerability Assessment Versions Affected Notes

CVE-2026-8646

8.1

HTTP request smuggling

17.0.0.3-26.0.0.6

Affects the servlet-3.0, servlet-3.1, servlet-4.0, servlet-5.0, servlet-6.0, servlet-6.1, websocket-1.0, websocket-1.1, websocket-2.0, websocket-2.1, and websocket-2.2 features

CVE-2026-9320

5.9

Denial of service

17.0.0.3-26.0.0.6

Affects the servlet-3.0, servlet-3.1, servlet-4.0, servlet-5.0, servlet-6.0, servlet-6.1, websocket-1.0, websocket-1.1, websocket-2.0, websocket-2.1, and websocket-2.2 features

CVE-2026-9071

7.1

Denial of service

17.0.0.3-26.0.0.6

Affects servlet-3.0, servlet-3.1, servlet-4.0, servlet-5.0, servlet-6.0, servlet-6.1, websocket-1.0, websocket-1.1, websocket-2.0, websocket-2.1, and websocket-2.2 features

CVE-2026-42402

7.5

Denial of service

17.0.0.3-26.0.0.6

Affects jaxws-2.2, xmlWS-3.0, and xmlWS-4.0 features

CVE-2026-42403

7.5

Denial of service

17.0.0.3-26.0.0.6

Affects jaxws-2.2, xmlWS-3.0, and xmlWS-4.0 features

CVE-2026-42404

7.2

Server-Side Request Forgery

17.0.0.3-26.0.0.6

Affects jaxws-2.2, xmlWS-3.0, and xmlWS-4.0 features

CVE-2026-11806

7.2

HTTP request smuggling

17.0.0.3-26.0.0.6

Affects restConnector-2.0 feature

CVE-2026-11541

7.4

HTTP request smuggling

17.0.0.3-26.0.0.6

For a list of past security vulnerability fixes, reference the Security vulnerability (CVE) list.

Notable bugs fixed in this release

Get Open Liberty 26.0.0.7 now