CVE-2011-1411: Shibboleth Opensaml

Medium severity, CVSS 5.8. EPSS: 2.3% chance of exploitation in the next 30 days.

Shibboleth OpenSAML library 2.4.x before 2.4.3 and 2.5.x before 2.5.1, and IdP before 2.3.2, allows remote attackers to forge messages and bypass authentication via an "XML Signature wrapping attack."

Affected products

• Shibboleth Opensaml: version 2.4.0 only; version 2.4.1 only; version 2.4.2 only; version 2.5.0 only
• Shibboleth Shibboleth-Identity-Provider: up to and including 2.3.1; version 2.0.0 only; version 2.1.0 only; version 2.1.1 only; version 2.1.2 only; version 2.1.3 only; …

Published 2011-09-02. Last modified 2026-06-16.