CVE-2009-3474: INTERNET2 Opensaml

High severity, CVSS 7.5. EPSS: 1.5% chance of exploitation in the next 30 days.

OpenSAML 2.x before 2.2.1 and XMLTooling 1.x before 1.2.1, as used by Internet2 Shibboleth Service Provider 2.x before 2.2.1, do not follow the KeyDescriptor element's Use attribute, which allows remote attackers to use a certificate for both signing and encryption when it is designated for just one purpose, potentially weakening the intended security application of the certificate.

Affected products

• INTERNET2 Opensaml: version 2.0 only; version 2.1.0 only; version 2.2.0 only
• INTERNET2 Shibboleth-SP: version 1.3.1 only; version 1.3.2 only; version 1.3b only; version 1.3f only; version 2.0 only; version 2.1 only; …
• INTERNET2 Xmltooling: version 1.0.1 only; version 1.1.0 only; version 1.1.1 only; version 1.2.0 only

Published 2009-09-29. Last modified 2026-06-16.