CVE-2026-31940

Session Fixation in Chamilo LMS

State: Published
Severity: 7.5 High
Published: Apr 10, 2026
Updated: Apr 14, 2026
Reserved: Mar 10, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H	GitHub_M

Weaknesses

CWE-384 Session Fixation

Affected Products

Product	Versions
chamilo-lmschamilo	< 1.11.38Affected >= 2.0.0-alpha.1, < 2.0.0-RC.3Affected

References

https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-4gp7-cfjh-77gv
https://github.com/chamilo/chamilo-lms/commit/ce0192c62e48c9d9474d915c541b3274844afbf9
https://github.com/chamilo/chamilo-lms/commit/e337b7cc74a0276a0b4f91f9282204d20cac1869

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