CVE-2009-3656: Tim Nelson Shared Sign-On

Medium severity, CVSS 6.8. EPSS: 0.6% chance of exploitation in the next 30 days.

Cross-site request forgery (CSRF) vulnerability in Shared Sign-On 5.x and 6.x, a module for Drupal, allows remote attackers to hijack the authentication of arbitrary users via unknown vectors.

Affected products

• Tim Nelson Shared Sign-On: version 5.x only; version 6.x only

Published 2009-10-09. Last modified 2026-06-16.