CVE-2026-33707

CRITICAL

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.

CVSS v3.1 Score

9.4
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
LOW
Published: 4/10/2026Modified: 4/16/2026

Related Intelligence (1)

CRITICALVulnerability

NVD CRITICAL: CVE-2026-33707 — Chamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, th...

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.

CVE-2026-33707
NIST NVD

References (3)

https://github.com/chamilo/chamilo-lms/commit/078d7e5b77679fa7ccfcd6783bd5cc683db0bda8Patchhttps://github.com/chamilo/chamilo-lms/commit/750a45312a0d5c3ad60dbfbd0d959ca40be4a18cPatchhttps://github.com/chamilo/chamilo-lms/security/advisories/GHSA-f27g-66gq-g7v2Vendor Advisory