Description
Chamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, Chamilo LMS contains an Insecure Direct Object Reference (IDOR) vulnerability in the Learning Path progress saving endpoint. The file lp_ajax_save_item.php accepts a uid (user ID) parameter directly from $_REQUEST and uses it to load and modify another user's Learning Path progress — including score, status, completion, and time — without verifying that the requesting user matches the target user ID. Any authenticated user enrolled in a course can overwrite another user's Learning Path progress by simply changing the uid parameter in the request. This vulnerability is fixed in 1.11.38 and 2.0.0-RC.3.
Affected products
chamilo: chamilo lms
References4
- github.com/chamilo/chamilo-lms/security/advisories/GHSA-3rv7-9f… Vendor Advisory
- github.com/chamilo/chamilo-lms/security/advisories/GHSA-3rv7-9f… Vendor Advisory
- github.com/chamilo/chamilo-lms/commit/6331d051b4468deb5830c01d1… Patch
- github.com/chamilo/chamilo-lms/commit/bf3f6c6949b5c882b48a9914b… Patch
Metrics
- CVSS 3.1
-
7.1
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L - EPSS — exploit probability
- 0% percentile: 16 · as of 12 November 2026
- CWE
- CWE-639
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.