CVE-2026-33707 CRITICAL

CVE-2026-33707: Weak Password Recovery Mechanism for Forgotten Password in chamilo/chamilo-lms

Vendor Chamilo
Product chamilo-lms
Weakness CWE-640 · Weak password recovery
Published April 10, 2026
Last update April 13, 2026

CVSS base score

9.4/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

Chamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, the default password reset mechanism generates tokens using sha1($email) with no random component, no expiration, and no rate limiting. An attacker who knows a user's email can compute the reset token and change the victim's password without authentication. This vulnerability is fixed in 1.11.38 and 2.0.0-RC.3.

Key dates

02Disclosure timeline

April 10, 2026 CVE published
April 13, 2026 Record updated