CVE-2026-33702 Chamilo LMS has an Insecure Direct Object Reference (IDOR)
Authenticated users can modify other users' Learning Path progress by manipulating the user ID parameter in the request.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-33702?
CVE-2026-33702 is a high-severity missing authorization vulnerability in Chamilo Chamilo Lms, published on 10 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-639
Which versions are affected by CVE-2026-33702?
It affects 1 product.
Products include Chamilo Chamilo Lms.
How do I fix CVE-2026-33702?
No fix has been published for CVE-2026-33702 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-33702 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33702 exists.
Other vulnerabilities in Chamilo Chamilo Lms
Sources
Also known as GHSA-3rv7-9fhx-j654.