CVE-2026-33703

Published: Apr 10, 2026Modified: Jun 17, 2026

7.1

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/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

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:XShow less

Source: security-advisories@github.com (Secondary)

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.

Affected (10)

Products: Chamilo: Chamilo Lms

Chamilo

1 product

Chamilo Lms

Configuration A

10 vulnerable

Vulnerable Software	Affected Versions
Chamilo Chamilo Lms	Version 2.0.0 alpha1
Chamilo Chamilo Lms	Version 2.0.0 alpha2
Chamilo Chamilo Lms	Version 2.0.0 alpha3
Chamilo Chamilo Lms	Version 2.0.0 alpha4
Chamilo Chamilo Lms	Version 2.0.0 alpha5
Chamilo Chamilo Lms	Version 2.0.0 beta1
Chamilo Chamilo Lms	Version 2.0.0 beta2
Chamilo Chamilo Lms	Version 2.0.0 beta3
Chamilo Chamilo Lms	Version 2.0.0 rc1
Chamilo Chamilo Lms	Version 2.0.0 rc2

Related CWEs

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.

References (1)

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

Source: security-advisories@github.com

Vendor Advisory

Timeline

No history available yet.