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CVE-2026-34602

HIGH

7.1

Descripcion

Chamilo LMS is an open-source learning management system. In versions prior to 2.0.0-RC.3, the /api/course_rel_users endpoint is vulnerable to Insecure Direct Object Reference (IDOR), allowing an authenticated attacker to modify the user parameter in the request body to enroll any arbitrary user into any course without proper authorization checks. The backend trusts the user-supplied input for the user field and performs no server-side verification that the requester owns the referenced user ID or has permission to act on behalf of other users. This enables unauthorized manipulation of user-course relationships, potentially granting unintended access to course materials, bypassing enrollment controls, and compromising platform integrity. This issue has been fixed in version 2.0.0-RC.3.

Detalles CVE

Puntuacion CVSS v3.17.1

SeveridadHIGH

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

Vector de ataqueNETWORK

ComplejidadLOW

Privilegios requeridosLOW

Interaccion usuarioNONE

Publicado4/14/2026

Ultima modificacion4/14/2026

Fuentenvd

Avistamientos honeypot0

Debilidades (CWE)

CWE-639

Referencias

https://github.com/chamilo/chamilo-lms/commit/2a9f060fa9d50fc9a92ed93af774d2619642df92(security-advisories@github.com)

https://github.com/chamilo/chamilo-lms/commit/bd2ba34c2e74475587e38c74c90c2934e69c8779(security-advisories@github.com)

https://github.com/chamilo/chamilo-lms/commit/c9c30cdc48afae57cd6ab012ae2eceafd351a40e(security-advisories@github.com)

https://github.com/chamilo/chamilo-lms/releases/tag/v2.0.0-RC.3(security-advisories@github.com)

https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-x373-8j9j-g5pj(security-advisories@github.com)

Correlaciones IOC

Sin correlaciones registradas

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