CVE-2026-31940

HIGH

Session Fixation in Chamilo LMS

Title source: cna

Description

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.

References (3)

[X_Refsource_Confirm] https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-4gp7-cfjh-77gv

[X_Refsource_Misc] https://github.com/chamilo/chamilo-lms/commit/ce0192c62e48c9d9474d915c541b3274844afbf9

View Writeup ZIP pw:eip

[X_Refsource_Misc] https://github.com/chamilo/chamilo-lms/commit/e337b7cc74a0276a0b4f91f9282204d20cac1869

Scores

CVSS v3 7.5

EPSS 0.0004

EPSS Percentile 12.4%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

CWE

CWE-384

Status published

Products (4)

chamilo/chamilo-lms < 1.11.38

chamilo/chamilo-lms >= 2.0.0-alpha.1, < 2.0.0-RC.3

chamilo/chamilo_lms 2.0.0 alpha1 (10 CPE variants)

chamilo/chamilo_lms < 1.11.38

Published Apr 10, 2026

Tracked Since Apr 10, 2026