What is CVE-2026-15556?

CVE-2026-15556 is a high-severity vulnerability in Red Hat Jboss Enterprise Application Platform 7, classified under Improper Verification of Cryptographic Signature. CVSS score: 8.1/10. Published 2026-08-11.

How severe is CVE-2026-15556?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Red Hat Jboss Enterprise Application Platform 7

CVE-2026-15556

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 protec…

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

Affected products

Weakness classification (CWE)

CWE-347 — Improper Verification of Cryptographic Signature

References

secalert@redhat.com (x_refsource_REDHAT, vdb-entry)
secalert@redhat.com (x_refsource_REDHAT, issue-tracking)

Frequently asked questions

What is CVE-2026-15556?: CVE-2026-15556 is a high-severity vulnerability in Red Hat Jboss Enterprise Application Platform 7, classified under Improper Verification of Cryptographic Signature. CVSS score: 8.1/10. Published 2026-08-11.
How severe is CVE-2026-15556?: High severity. CVSS v3 base score is 8.1 out of 10.