Name: CVE-2026-15556: Improper Verification of Cryptographic Signature
Creator: Rapid7
Published: 2026-08-11T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-15556, CWE-347, CVSS 8.1, EPSS 0.00238

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.

CVSS Details

CVSS 3.1 Base Score: 8.1
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Red Hat Jboss Eap	—	Upgrade Red Hat JBoss EAP to the latest version	Aug 14, 2026	Aug 11, 2026

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CVSS Details

Covered by Rapid7

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