Vulnerability · Published Aug 11, 2026 · Assigned by redhat
CVE-2026-15556Picketlink-federation: picketlink saml 2.0 auth bypass via missing assertions
High 8.1
In plain English
A high-severity security flaw in Red Hat JBoss Enterprise Application Platform 7 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities).
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.3%top 77.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
Weakness: CWE-347 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
References
- RHSA-2026:53644 vendor-advisory, x_refsource_REDHAT
- RHSA-2026:53806 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-15556 vdb-entry, x_refsource_REDHAT
- RHBZ#2483121 issue-tracking, x_refsource_REDHAT