CVE-2009-3476: INTERNET2 Opensaml

High severity, CVSS 9.3. EPSS: 4.1% chance of exploitation in the next 30 days.

Buffer overflow in OpenSAML before 1.1.3 as used in Internet2 Shibboleth Service Provider software 1.3.x before 1.3.4, and XMLTooling before 1.2.2 as used in Internet2 Shibboleth Service Provider software 2.x before 2.2.1, allows remote attackers to cause a denial of service and possibly execute arbitrary code via a malformed encoded URL.

Affected products

• INTERNET2 Opensaml: version 1.1 only; version 1.1.1 only
• INTERNET2 Shibboleth-SP: version 1.3.1 only; version 1.3.2 only; version 1.3.3 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; version 1.2.1 only

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