{"id":"CVE-2026-15556","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-15556","summary":"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…","details":"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.","published":"2026-08-11T09:17:12.687","modified":"2026-08-11T09:17:12.687","cvss":{"score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-15556"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2483121"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-11T09:17:12.687"}}