CVE-2009-4527: Niif Shib Auth

Medium severity, CVSS 4.6. EPSS: 0.3% chance of exploitation in the next 30 days.

The Shibboleth authentication module 5.x before 5.x-3.4 and 6.x before 6.x-3.2, a module for Drupal, does not properly remove statically granted privileges after a logout or other session change, which allows physically proximate attackers to gain privileges by using an unattended web browser.

Affected products

• Niif Shib Auth: version 5.x-1.x only; version 5.x-2.1 only; version 5.x-2.2 only; version 5.x-2.4 only; version 5.x-2.5 only; version 5.x-2.x only; …

Published 2009-12-31. Last modified 2026-06-16.