CVE-2006-0511: Blackboard

Medium severity, CVSS 4.3. EPSS: 0.4% chance of exploitation in the next 30 days.

Blackboard Academic Suite 6.0 and earlier does not properly clear session information when de-authenticating a user who is idle, which allows subsequent users to log in as the previous user and gain privileges. NOTE: the vendor has disputed this issue, saying that "This is a customer specific issue related to their Kerberos authentication single sign-on application and not a vulnerability in the Blackboard product.

Affected products

• Blackboard Blackboard: version 5.0 only; version 5.0.2 only; version 5.5 only; version 5.5.1 only; version 6.0 only
• Blackboard Blackboard Academic Suite: version 6.0 only

Published 2006-02-01. Last modified 2026-06-16.