CVE-2025-59540

Chamilo: Stored Cross-Site Scripting (XSS) in Chamilo LMS Exercise Feedback

State: Published
Severity: 6.4 Medium
Published: Mar 6, 2026
Updated: Mar 6, 2026
Reserved: Sep 17, 2025

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.

Scores

CVSS	Score	Vector	Source
4.0	6.4 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H	GitHub_M

Weaknesses

CWE-80 Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Product	Versions
chamilo-lmschamilo	< 1.11.34Affected

References

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