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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
High
Complete data modification
Availability
Low
Partial disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 11
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Chamilo Chamilo_Lms
cpe:2.3:a:chamilo:chamilo_lms:*:*:*:*:*:*:*:*
|
— |
1.11.38
|
|
Chamilo Chamilo_Lms
cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha1:*:*:*:*:*:*
|
— | — |
|
Chamilo Chamilo_Lms
cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha2:*:*:*:*:*:*
|
— | — |
|
Chamilo Chamilo_Lms
cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha3:*:*:*:*:*:*
|
— | — |
|
Chamilo Chamilo_Lms
cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha4:*:*:*:*:*:*
|
— | — |
|
Chamilo Chamilo_Lms
cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha5:*:*:*:*:*:*
|
— | — |
|
Chamilo Chamilo_Lms
cpe:2.3:a:chamilo:chamilo_lms:2.0.0:beta1:*:*:*:*:*:*
|
— | — |
|
Chamilo Chamilo_Lms
cpe:2.3:a:chamilo:chamilo_lms:2.0.0:beta2:*:*:*:*:*:*
|
— | — |
|
Chamilo Chamilo_Lms
cpe:2.3:a:chamilo:chamilo_lms:2.0.0:beta3:*:*:*:*:*:*
|
— | — |
|
Chamilo Chamilo_Lms
cpe:2.3:a:chamilo:chamilo_lms:2.0.0:rc1:*:*:*:*:*:*
|
— | — |
|
Chamilo Chamilo_Lms
cpe:2.3:a:chamilo:chamilo_lms:2.0.0:rc2:*:*:*:*:*:*
|
— | — |
References 3
https://github.com/chamilo/chamilo-lms/commit/6331d051b4468deb5830c01d1e047c5e5…
security-advisories@github.com
https://github.com/chamilo/chamilo-lms/commit/bf3f6c6949b5c882b48a9914baa199104…
security-advisories@github.com
https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-3rv7-9fhx-j654
security-advisories@github.com