CVE-2025-52476: Chamilo: Reflected XSS via keyword_active parameter

Severity: medium (CVSS 6.1 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: 2026-03-02 · updated 2026-06-17
Weakness: CWE-79

Description

Chamilo is a learning management system. Prior to version 1.11.30, there is a reflected cross-site scripting (XSS) vulnerability due to improper sanitization of the keyword_active parameter in admin/user_list.php. This issue has been patched in version 1.11.30.

Affected products

chamilo-lms: before 1.11.30 — fixed in 1.11.30

How to fix

Upgrade to a fixed version: chamilo-lms 1.11.30. Check the vendor advisory for mitigations.

References

https://github.com/chamilo/chamilo-lms/commit/349062d31533d464feea78d41996bc0857f90f61
https://github.com/chamilo/chamilo-lms/releases/tag/v1.11.30
https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-pqjc-rvr9-w8m2

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