CVE-2026-33703

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 v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

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

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha1::::::
	cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha2::::::
	cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha3::::::
	cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha4::::::
	cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha5::::::
	cpe:2.3:a:chamilo:chamilo_lms:2.0.0:beta1::::::
	cpe:2.3:a:chamilo:chamilo_lms:2.0.0:beta2::::::
	cpe:2.3:a:chamilo:chamilo_lms:2.0.0:beta3::::::
	cpe:2.3:a:chamilo:chamilo_lms:2.0.0:rc1::::::
	cpe:2.3:a:chamilo:chamilo_lms:2.0.0:rc2::::::

History

26 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) Chamilo LMS es un sistema de gestión del aprendizaje. Antes de la versión 2.0.0-RC.3, una vulnerabilidad de Referencia Directa Insegura a Objeto (IDOR) en el endpoint /social-network/personal-data/{userId} permite a cualquier usuario autenticado acceder a datos personales completos y tokens de API de usuarios arbitrarios modificando el parámetro userId. Esto resulta en una divulgación masiva de información sensible del usuario y credenciales, lo que permite una violación de datos completa de la plataforma. Esta vulnerabilidad está corregida en la versión 2.0.0-RC.3.

Information

Published : 2026-04-10 19:16

Updated : 2026-10-26 21:10

NVD link : CVE-2026-33703

Mitre link : CVE-2026-33703

CVE.ORG link : CVE-2026-33703

JSON object : View

Products Affected

chamilo

chamilo_lms

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

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