Vulnerability · Published Mar 2, 2026 · Assigned by GitHub_M

CVE-2025-50186Chamilo: Stored XSS via Malicious CSV Filename in user_import.php

Medium 4.8

In plain English

A medium-severity cross-site scripting in chamilo-lms from chamilo. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).

Severity (CVSS 3.1)4.8Medium

Exploit odds (30 days)0.4%top 71.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Chamilo is a learning management system. Prior to version 1.11.30, a stored cross-site scripting (XSS) vulnerability exists due to insufficient sanitization of CSV filenames. An attacker can upload a maliciously named CSV file (e.g., <img src=q onerror=prompt(8)>.csv) that leads to JavaScript execution when viewed by administrators or users with access to import logs or file views. This issue has been patched in version 1.11.30.

Affected products (as reported)

Vendor	Product	Versions
chamilo	chamilo-lms	< 1.11.30

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

References

https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-wrx6-5v5r-mmgx x_refsource_CONFIRM
https://github.com/chamilo/chamilo-lms/commit/9fef8f30b41d586cb4f4fc823906c16a12ae0ff4 x_refsource_MISC
https://github.com/chamilo/chamilo-lms/releases/tag/v1.11.30 x_refsource_MISC