CVE-2026-33703 — MEDIUM (6.5)

Vulnerability Description

Chamilo LMS is a learning management system. Prior to 2.0.0-RC.3, an Insecure Direct Object Reference (IDOR) vulnerability in the /social-network/personal-data/{userId} endpoint allows any authenticated user to access full personal data and API tokens of arbitrary users by modifying the userId parameter. This results in mass disclosure of sensitive user information and credentials, enabling a full platform data breach. This vulnerability is fixed in 2.0.0-RC.3.

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

HIGH

Availability

NONE

Affected Products

Vendor	Product	Versions
Chamilo	Chamilo Lms	2.0.0

Related Weaknesses (CWE)

CWE-639

References

https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-27x6-c5c7-gpf5Vendor Advisory

FAQ

What is CVE-2026-33703?

CVE-2026-33703 is a vulnerability with a CVSS score of 6.5 (MEDIUM). Chamilo LMS is a learning management system. Prior to 2.0.0-RC.3, an Insecure Direct Object Reference (IDOR) vulnerability in the /social-network/personal-data/{userId} endpoint allows any authenticat...

How severe is CVE-2026-33703?

CVE-2026-33703 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-33703?

Check the references section above for vendor advisories and patch information. Affected products include: Chamilo Chamilo Lms.