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Advisory severityHigh8.1Red Hat Linux

High [CVE-2026-15556] picketlink SAML 2.0 auth bypass via missing assertions

This high-severity Red Hat Linux advisory covers CVE-2026-15556 affecting Red Hat JBoss Enterprise Application Platform 7.4.25, Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7, Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-15556 Source published Source updated

VulniPulse record published Record updated

CVE-2026-15556
Affected products & platforms
Red Hat LinuxUnclassified
Open source advisory

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Summary

A flaw was found in Picketlink's SP signature validation; a SAML response containing zero assertion elements matching the signature check can allow an attacker to forge a SAML response and auth as any principal with any roles on the protected application. Red Hat JBoss EAP 8.x is not affected.

The vulnerable components (`picketlink-federation`, `picketlink-common`) are not shipped in EAP 8.x. The `org/picketlink/` module path does not exist.

The only PicketLink-related artifact in EAP 8.1 is `wildfly-picketlink-8.1.1.GA-redhat-00012.jar` — a WildFly subsystem extension that provides the `migrate` CLI operation for EAP 7→8 upgrades. This JAR contains no SAML processing code, no signature validation logic, and has no module dependency on `org.picketlink.federation`.

The PicketLink SAML SP code path is entirely absent from EAP 8.x. Red Hat severity: Important — CVSS 8.1 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N).

Weakness: CWE-347. Affected Red Hat products: Red Hat JBoss Enterprise Application Platform 7.4.25; Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7; Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8; Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9; Red Hat JBoss Enterprise Application Platform 7.

Red Hat fixing advisory: RHSA-2026:53806, RHSA-2026:53644, RHSA-2026:53645, RHSA-2026:53646.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.

Official advisory · high-confidence parse· fetched 15 hours ago·verify at source

Fixed versions
  • org.picketlink/picketlink-federation:2.5.5.SP12-redhat-00016
  • eap7-activemq-artemis-0:2.16.0-22.redhat_00057.1.el7eap
  • eap7-glassfish-jsf-0:2.3.14-11.SP11_redhat_00001.1.el7eap
  • eap7-ironjacamar-0:1.5.26-2.Final_redhat_00001.1.el7eap
  • eap7-jackson-annotations-0:2.18.8-1.redhat_00003.1.el7eap
  • eap7-jackson-core-0:2.18.8-1.redhat_00003.1.el7eap
  • eap7-jackson-databind-0:2.18.8-1.redhat_00003.1.el7eap
  • eap7-jackson-jaxrs-providers-0:2.18.8-1.redhat_00003.1.el7eap
  • eap7-jackson-modules-base-0:2.18.8-1.redhat_00003.1.el7eap
  • eap7-jackson-modules-java8-0:2.18.8-1.redhat_00003.1.el7eap
  • eap7-jboss-remoting-0:5.0.31-3.SP2_redhat_00001.1.el7eap
  • eap7-jboss-server-migration-0:1.10.0-46.Final_redhat_00044.1.el7eap
  • eap7-netty-0:4.1.135-1.Final_redhat_00001.1.el7eap
  • eap7-netty-transport-native-epoll-0:4.1.135-1.Final_redhat_00001.1.el7eap
  • eap7-picketlink-bindings-0:2.5.5-30.SP12_redhat_00020.1.el7eap
  • eap7-picketlink-federation-0:2.5.5-24.SP12_redhat_00016.1.el7eap
  • eap7-undertow-0:2.2.40-2.SP3_redhat_00001.1.el7eap
  • eap7-wildfly-0:7.4.25-2.GA_redhat_00001.1.el7eap
  • eap7-activemq-artemis-0:2.16.0-22.redhat_00057.1.el8eap
  • eap7-glassfish-jsf-0:2.3.14-11.SP11_redhat_00001.1.el8eap
  • eap7-ironjacamar-0:1.5.26-2.Final_redhat_00001.1.el8eap
  • eap7-jackson-annotations-0:2.18.8-1.redhat_00003.1.el8eap
  • eap7-jackson-core-0:2.18.8-1.redhat_00003.1.el8eap
  • eap7-jackson-databind-0:2.18.8-1.redhat_00003.1.el8eap
  • eap7-jackson-jaxrs-providers-0:2.18.8-1.redhat_00003.1.el8eap
  • eap7-jackson-modules-base-0:2.18.8-1.redhat_00003.1.el8eap
  • eap7-jackson-modules-java8-0:2.18.8-1.redhat_00003.1.el8eap
  • eap7-jboss-remoting-0:5.0.31-3.SP2_redhat_00001.1.el8eap
  • eap7-jboss-server-migration-0:1.10.0-46.Final_redhat_00044.1.el8eap
  • eap7-netty-0:4.1.135-1.Final_redhat_00001.1.el8eap
  • eap7-netty-transport-native-epoll-0:4.1.135-1.Final_redhat_00001.1.el8eap
  • eap7-picketlink-bindings-0:2.5.5-30.SP12_redhat_00020.1.el8eap
  • eap7-picketlink-federation-0:2.5.5-24.SP12_redhat_00016.1.el8eap
  • eap7-undertow-0:2.2.40-1.SP3_redhat_00001.1.el8eap
  • eap7-wildfly-0:7.4.25-2.GA_redhat_00001.1.el8eap
  • eap7-activemq-artemis-0:2.16.0-22.redhat_00057.1.el9eap
  • eap7-glassfish-jsf-0:2.3.14-11.SP11_redhat_00001.1.el9eap
  • eap7-ironjacamar-0:1.5.26-2.Final_redhat_00001.1.el9eap
  • eap7-jackson-annotations-0:2.18.8-1.redhat_00003.1.el9eap
  • eap7-jackson-core-0:2.18.8-1.redhat_00003.1.el9eap
  • RHSA-2026:53806
  • RHSA-2026:53644
  • RHSA-2026:53645
  • RHSA-2026:53646

Official advisory · high-confidence parse· fetched 15 hours ago·verify at source

Mitigation

Upgrade to a fixed release: org.picketlink/picketlink-federation:2.5.5.SP12-redhat-00016, eap7-activemq-artemis-0:2.16.0-22.redhat_00057.1.el7eap, eap7-glassfish-jsf-0:2.3.14-11.SP11_redhat_00001.1.el7eap, eap7-ironjacamar-0:1.5.26-2.Final_redhat_00001.1.el7eap, eap7-jackson-annotations-0:2.18.8-1.redhat_00003.1.el7eap, eap7-jackson-core-0:2.18.8-1.redhat_00003.1.el7eap. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 15 hours ago·verify at source

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