CVE-2026-15556
Picketlink-federation: picketlink saml 2.0 auth bypass via missing assertions
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What happened?
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.
Affected software and versions
| Software | Version information | Fixed version |
|---|---|---|
| Red Hat JBoss Enterprise Application Platform 7.4.25Red Hat | Default status: unaffected | See vendor advisory |
| eap7-activemq-artemisRed Hat | unaffected: 0:2.16.0-22.redhat_00057.1.el7eap to < * | See vendor advisory |
| eap7-glassfish-jsfRed Hat | unaffected: 0:2.3.14-11.SP11_redhat_00001.1.el7eap to < * | See vendor advisory |
| eap7-ironjacamarRed Hat | unaffected: 0:1.5.26-2.Final_redhat_00001.1.el7eap to < * | See vendor advisory |
| eap7-jackson-annotationsRed Hat | unaffected: 0:2.18.8-1.redhat_00003.1.el7eap to < * | See vendor advisory |
| eap7-jackson-coreRed Hat | unaffected: 0:2.18.8-1.redhat_00003.1.el7eap to < * | See vendor advisory |
| eap7-jackson-databindRed Hat | unaffected: 0:2.18.8-1.redhat_00003.1.el7eap to < * | See vendor advisory |
| eap7-jackson-jaxrs-providersRed Hat | unaffected: 0:2.18.8-1.redhat_00003.1.el7eap to < * | See vendor advisory |
| eap7-jackson-modules-baseRed Hat | unaffected: 0:2.18.8-1.redhat_00003.1.el7eap to < * | See vendor advisory |
| eap7-jackson-modules-java8Red Hat | unaffected: 0:2.18.8-1.redhat_00003.1.el7eap to < * | See vendor advisory |
| eap7-jboss-remotingRed Hat | unaffected: 0:5.0.31-3.SP2_redhat_00001.1.el7eap to < * | See vendor advisory |
| eap7-jboss-server-migrationRed Hat | unaffected: 0:1.10.0-46.Final_redhat_00044.1.el7eap to < * | See vendor advisory |
| eap7-nettyRed Hat | unaffected: 0:4.1.135-1.Final_redhat_00001.1.el7eap to < * | See vendor advisory |
| eap7-netty-transport-native-epollRed Hat | unaffected: 0:4.1.135-1.Final_redhat_00001.1.el7eap to < * | See vendor advisory |
| eap7-picketlink-bindingsRed Hat | unaffected: 0:2.5.5-30.SP12_redhat_00020.1.el7eap to < * | See vendor advisory |
| eap7-picketlink-federationRed Hat | unaffected: 0:2.5.5-24.SP12_redhat_00016.1.el7eap to < * | See vendor advisory |
| eap7-undertowRed Hat | unaffected: 0:2.2.40-2.SP3_redhat_00001.1.el7eap to < * | See vendor advisory |
| eap7-wildflyRed Hat | unaffected: 0:7.4.25-2.GA_redhat_00001.1.el7eap to < * | See vendor advisory |
| picketlink-federationRed Hat | Default status: affected | See vendor advisory |
| picketlink-federationRed Hat | Default status: unaffected | See vendor advisory |
| picketlink-federationRed Hat | Default status: unaffected | See vendor advisory |
Version information comes from the source record and can include unaffected products and exceptions. Distribution packages may contain backported fixes: an older upstream version alone does not prove a server is affected.
Is it being exploited?
This CVE was not listed in the CISA catalogue at our last retrieval. This does not establish that exploitation is absent.
How to respond
- Confirm the product, installed package version, and any configuration requirements in the vendor advisory.
- Follow the vendor’s remediation or workaround guidance in the references below. Structured fixed-version data is unavailable here; the publisher’s description may include a fix or workaround.
- Restart affected services if required, then verify the running version. Known exploitation may warrant investigation as well as patching.