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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-15556
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-11 09:17:12 UTC
Updated2026-11-01 01:17:22 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v3.1 8.1 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

EPSS: 0.002380000 probability, percentile 0.139690000 (date 2026-10-20)

Problem Types: CWE-347 | CWE-347 Improper Verification of Cryptographic Signature

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
3.1CNACVSS8.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Red Hat Red Hat JBoss Enterprise Application Platform 7.4.25 Not specified Not specified
CNA Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS On RHEL 7 unaffected 0:2.16.0-22.redhat_00057.1.el7eap * rpm Not specified
CNA Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS On RHEL 7 unaffected 0:2.3.14-11.SP11_redhat_00001.1.el7eap * rpm Not specified
CNA Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS On RHEL 7 unaffected 0:1.5.26-2.Final_redhat_00001.1.el7eap * rpm Not specified
CNA Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS On RHEL 7 unaffected 0:2.18.8-1.redhat_00003.1.el7eap * rpm Not specified
CNA Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS On RHEL 7 unaffected 0:2.18.8-1.redhat_00003.1.el7eap * rpm Not specified
CNA Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS On RHEL 7 unaffected 0:2.18.8-1.redhat_00003.1.el7eap * rpm Not specified
CNA Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS On RHEL 7 unaffected 0:2.18.8-1.redhat_00003.1.el7eap * rpm Not specified
CNA Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS On RHEL 7 unaffected 0:2.18.8-1.redhat_00003.1.el7eap * rpm Not specified
CNA Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS On RHEL 7 unaffected 0:2.18.8-1.redhat_00003.1.el7eap * rpm Not specified
CNA Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS On RHEL 7 unaffected 0:5.0.31-3.SP2_redhat_00001.1.el7eap * rpm Not specified
CNA Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS On RHEL 7 unaffected 0:1.10.0-46.Final_redhat_00044.1.el7eap * rpm Not specified
CNA Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS On RHEL 7 unaffected 0:4.1.135-1.Final_redhat_00001.1.el7eap * rpm Not specified
CNA Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS On RHEL 7 unaffected 0:4.1.135-1.Final_redhat_00001.1.el7eap * rpm Not specified
CNA Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS On RHEL 7 unaffected 0:2.5.5-30.SP12_redhat_00020.1.el7eap * rpm Not specified
CNA Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS On RHEL 7 unaffected 0:2.5.5-24.SP12_redhat_00016.1.el7eap * rpm Not specified
CNA Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS On RHEL 7 unaffected 0:2.2.40-2.SP3_redhat_00001.1.el7eap * rpm Not specified
CNA Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS On RHEL 7 unaffected 0:7.4.25-2.GA_redhat_00001.1.el7eap * rpm Not specified
CNA Red Hat Red Hat JBoss Enterprise Application Platform 7 Not specified Not specified
CNA Red Hat Red Hat JBoss Enterprise Application Platform 8 Not specified Not specified
CNA Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack Not specified Not specified

References

ReferenceSourceLinkTags
access.redhat.com/security/cve/CVE-2026-15556 [email protected] access.redhat.com
access.redhat.com/errata/RHSA-2026:53806 [email protected] access.redhat.com
access.redhat.com/errata/RHSA-2026:53644 [email protected] access.redhat.com
bugzilla.redhat.com/show_bug.cgi [email protected] bugzilla.redhat.com
access.redhat.com/errata/RHSA-2026:53645 MITRE access.redhat.com
access.redhat.com/errata/RHSA-2026:53646 MITRE access.redhat.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

SourceTimeEvent
CNA2026-05-28T23:46:02.407ZReported to Red Hat.
CNA2026-08-11T05:54:53.908ZMade public.

Workarounds

CNA: 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.

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