CVE-2011-4294: Moodle

Medium severity, CVSS 5.8. EPSS: 1.5% chance of exploitation in the next 30 days.

The error-message functionality in Moodle 1.9.x before 1.9.13, 2.0.x before 2.0.4, and 2.1.x before 2.1.1 does not ensure that a continuation link refers to an http or https URL for the local Moodle instance, which might allow attackers to trick users into visiting arbitrary web sites via unspecified vectors.

Affected products

• Moodle Moodle: version 1.9.1 only; version 1.9.2 only; version 1.9.3 only; version 1.9.4 only; version 1.9.5 only; version 1.9.6 only; …

Published 2012-07-16. Last modified 2026-06-16.