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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Red Hat Red Hat JBoss Enterprise Application Platform 7 affected —
Red Hat Red Hat JBoss Enterprise Application Platform 8 unaffected —
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack unaffected —

No data.

No data.

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Project Subscriptions

Vendors Products
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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://access.redhat.com/security/cve/CVE-2026-15556 cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=2483121 cve-icon
History

Tue, 11 Aug 2026 09:15:00 +0000

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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-08-11T08:49:44.388Z

Reserved: 2026-07-13T05:00:40.638Z

Link: CVE-2026-15556

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-11T10:30:04Z

Weaknesses