CVE-2026-33708: Chamilo LMS has REST API PII Exposure via get_user_info_from_username

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-10 · updated 2026-10-26
Weakness: CWE-862

Description

Chamilo LMS is a learning management system. Prior to 1.11.38, the get_user_info_from_username REST API endpoint returns personal information (email, first name, last name, user ID, active status) of any user to any authenticated user, including students. There is no authorization check. This vulnerability is fixed in 1.11.38.

Affected products

chamilo-lms: before 1.11.38 — fixed in 1.11.38

How to fix

Upgrade to a fixed version: chamilo-lms 1.11.38. Check the vendor advisory for mitigations.

References

https://github.com/chamilo/chamilo-lms/commit/4a119f93abbfba6fe833580f2463c8d4afa500c2
https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-qwch-82q9-q999

Get alerted when CVE-2026-33708 or the next vulnerability affects your stack