CVE-2026-15556

High

Open

TLP:CLEAR

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

NVD CVE.org

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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.

Details

CVSS Score: 8.1
EPSS Score ⓘ: 0.18%

8.3th percentile
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Confidence: 90%
Published: Aug 11, 2026
Last Modified: Aug 11, 2026

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