Vulnerability · Published Apr 10, 2026 · Assigned by GitHub_M

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

Critical 9.4

In plain English

A critical-severity security flaw in chamilo-lms from chamilo. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities).

Severity (CVSS 3.1)9.4Critical

Exploit odds (30 days)0.4%top 62.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
chamilo	chamilo-lms	< 1.11.38>= 2.0.0-alpha.1, < 2.0.0-RC.3

Weakness: CWE-640 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

References

https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-f27g-66gq-g7v2 x_refsource_CONFIRM
https://github.com/chamilo/chamilo-lms/commit/078d7e5b77679fa7ccfcd6783bd5cc683db0bda8 x_refsource_MISC
https://github.com/chamilo/chamilo-lms/commit/750a45312a0d5c3ad60dbfbd0d959ca40be4a18c x_refsource_MISC