Vulnerability · Published Mar 6, 2026 · Assigned by GitHub_M

CVE-2025-59540Chamilo: Stored Cross-Site Scripting (XSS) in Chamilo LMS Exercise Feedback

Medium 6.4

In plain English

A medium-severity cross-site scripting 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 0.2% (higher than 10% of all known vulnerabilities).

Severity (CVSS 4.0)6.4Medium

Exploit odds (30 days)0.2%top 89.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
chamilo	chamilo-lms	< 1.11.34

Weakness: CWE-80, CWE-79 · Vector: 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

References

https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-59h4-34mx-m67m x_refsource_CONFIRM
https://github.com/chamilo/chamilo-lms/releases/tag/v1.11.34 x_refsource_MISC