CVE-2026-15556

EUVD-2026-55983
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.1 HIGH
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 8.25%
Common Weakness Enumeration
References
https://access.redhat.com/errata/RHSA-2026:53644
https://access.redhat.com/security/cve/CVE-2026-15556
https://bugzilla.redhat.com/show_bug.cgi?id=2483121