CVE-2026-33707CWE-640

Weak Password Recovery Mechanism for Forgotten Password in chamilo/chamilo-lms

Critical · published April 10, 2026

CVSS v3.1
9.4
EPSS
1%
Percentile
54.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.4 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
CVSS v4.0
Not supplied
EPSS
0.00754 · 54.6th percentile
Weakness
CWE-640 · Weak Password Recovery Mechanism for Forgotten Password
Published
2026-04-10T18:52Z
EPSS history
Timeline
  • 10 APR 18:52Z
    Weak Password Recovery Mechanism for Forgotten Password in chamilo/chamilo-lms
    cvelistv5