CVE-2026-31940: Chamilo Lms

High severity, CVSS 8.8. EPSS: 0.5% 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, in main/lp/aicc_hacp.php, user-controlled request parameters are directly used to set the PHP session ID before loading global bootstrap. This leads to session fixation. 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.