CVE-2026-15556

Picketlink-federation: picketlink saml 2.0 auth bypass via missing assertions

Published Aug 11, 2026 CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed
Description
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.

Remediation

Vendor Workaround

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability. A fix for Red Hat JBoss EAP 7.4 is currently in development.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el8
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el9
Type Values Removed Values Added
CPEs cpe:/a:redhat:jboss_enterprise_application_platform:7
Type Values Removed Values Added
CPEs cpe:/a:redhat:jboss_enterprise_application_platform:7
Type Values Removed Values Added
CPEs cpe:/a:redhat:jboss_enterprise_application_platform:7
cpe:/a:redhat:jboss_enterprise_application_platform:7.4
Type Values Removed Values Added
CPEs cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el9
References
Type Values Removed Values Added
CPEs cpe:/a:redhat:jboss_enterprise_application_platform:7
cpe:/a:redhat:jboss_enterprise_application_platform:7.4::el7
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el8
References
Type Values Removed Values Added
CPEs cpe:/a:redhat:jboss_enterprise_application_platform:7
Type Values Removed Values Added
CPEs cpe:/a:redhat:jboss_enterprise_application_platform:7 cpe:/a:redhat:jboss_enterprise_application_platform:7.4::el7
References
Type Values Removed Values Added
First Time appeared Redhat jboss Enterprise Application Platform Els
CPEs cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7
Vendors & Products Redhat jboss Enterprise Application Platform Els
References
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Redhat jboss Enterprise Application Platform Expansion Pack
Vendors & Products Redhat jboss Enterprise Application Platform Expansion Pack
Type Values Removed Values Added
Description 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.
Title Picketlink-federation: picketlink saml 2.0 auth bypass via missing assertions
First Time appeared Redhat
Redhat jboss Enterprise Application Platform
Redhat jbosseapxp
Weaknesses CWE-347
CPEs cpe:/a:redhat:jboss_enterprise_application_platform:7
cpe:/a:redhat:jboss_enterprise_application_platform:8
cpe:/a:redhat:jbosseapxp
Vendors & Products Redhat
Redhat jboss Enterprise Application Platform
Redhat jbosseapxp
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Nov 1, 2026, 12:11 AM
Reserved
Jul 13, 2026, 5:00 AM
Status
Awaiting Analysis
Published
Aug 11, 2026, 9:17 AM
Modified
Nov 1, 2026, 1:17 AM
Severity
Important
Public date
Aug 11, 2026, 5:54 AM