CVE-2026-33703CWE-639

Chamilo LMS Critical IDOR: Any Authenticated User Can Extract All Users’ Personal Data and API Tokens

High · published April 10, 2026

CVSS v4.0
7.1
EPSS
0%
Percentile
21.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
7.1 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00299 · 21.5th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-04-10T18:23Z
EPSS history
Timeline
  • 10 APR 18:23Z
    Chamilo LMS Critical IDOR: Any Authenticated User Can Extract All Users’ Personal Data and API Tokens
    cvelistv5