CVE-2026-33707: Chamilo Lms

Critical severity, CVSS 9.8. EPSS: 0.8% chance of exploitation in the next 30 days.

Chamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, the default password reset mechanism generates tokens using sha1($email) with no random component, no expiration, and no rate limiting. An attacker who knows a user's email can compute the reset token and change the victim's password without authentication. This vulnerability is fixed in 1.11.38 and 2.0.0-RC.3.

Affected products

• Chamilo Chamilo Lms: before 1.11.38 (fixed in 1.11.38); version 2.0.0 only

Published 2026-04-10. Last modified 2026-06-17.