6.5

CVE-2026-33703

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

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Chamilo ≫ Chamilo Lms Version 2.0.0 Update alpha1
Chamilo ≫ Chamilo Lms Version 2.0.0 Update alpha2
Chamilo ≫ Chamilo Lms Version 2.0.0 Update alpha3
Chamilo ≫ Chamilo Lms Version 2.0.0 Update alpha4
Chamilo ≫ Chamilo Lms Version 2.0.0 Update alpha5
Chamilo ≫ Chamilo Lms Version 2.0.0 Update beta1
Chamilo ≫ Chamilo Lms Version 2.0.0 Update beta2
Chamilo ≫ Chamilo Lms Version 2.0.0 Update beta3
Chamilo ≫ Chamilo Lms Version 2.0.0 Update rc1
Chamilo ≫ Chamilo Lms Version 2.0.0 Update rc2
VulnDex Vulnerability Enrichment
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.17% 0.07
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 6.5 2.8 3.6
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
security-advisories@github.com 7.1 0 0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE-639 Authorization Bypass Through User-Controlled Key

The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-27x6-c5c7-gpf5
Vendor Advisory