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."
CVSS 2.0MEDIUM 5.8·Network·No auth·Interaction —·EPSS 0.02291·Published 2011-09-02·Fixed in 2.4.3, 2.5.1CWE-287