CVE-2017-18262: Blackboard Learn

Medium severity, CVSS 6.1. EPSS: 1.4% chance of exploitation in the next 30 days.

Blackboard Learn (Since at least 17th of October 2017) has allowed Unvalidated Redirects on any signed-in user through its endpoints for handling Shibboleth logins, as demonstrated by a webapps/bb-auth-provider-shibboleth-BBLEARN/execute/shibbolethLogin?returnUrl= URI.

Affected products

• Blackboard Blackboard Learn: up to and including 9.1; version 9.1 only

Published 2018-04-30. Last modified 2026-06-17.