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6.4
Chamilo Learning Management System: Malicious Scripts Can Run in Admins' Browsers
CVE-2025-59540
Summary
A security issue in older versions of Chamilo allows a staff member to secretly run malicious code in the browser of higher-ranking administrators. This can happen when a staff member posts malicious feedback in the system. To fix this, update to version 1.11.34 or later.
What to do
No fix is available yet. Check with your software vendor for updates.
Affected software
| Vendor | Product | Affected versions | Fix available |
|---|---|---|---|
| chamilo | chamilo_lms | <= 1.11.34 | – |
Original title
Chamilo is a learning management system. Prior to version 1.11.34, a stored XSS vulnerability exists in Chamilo LMS that allows a staff account to execute arbitrary JavaScript in the browser of hig...
Original description
Chamilo is a learning management system. Prior to version 1.11.34, a stored XSS vulnerability exists in Chamilo LMS that allows a staff account to execute arbitrary JavaScript in the browser of higher-privileged admin users. The issue arises because feedback input in the exercise history page is not properly encoded before rendering, allowing malicious scripts to persist in the database and execute on view. This issue has been patched in version 1.11.34.
nvd CVSS4.0
6.4
Vulnerability type
CWE-79
Cross-site Scripting (XSS)
CWE-80
Basic XSS
Published: 6 Mar 2026 · Updated: 12 Mar 2026 · First seen: 6 Mar 2026