CVE-2026-33702

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.

• CWE-639

• https://github.com/chamilo/chamilo-lms/commit/6331d051b4468deb5830c01d1e047c5e5cf2c74fPatch
• https://github.com/chamilo/chamilo-lms/commit/bf3f6c6949b5c882b48a9914baa19910417e4551Patch
• https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-3rv7-9fhx-j654Vendor Advisory
• https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-3rv7-9fhx-j654Vendor Advisory

Published

Apr 10, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

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