What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 4.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-03-02 · updated 2026-06-17
• Weakness: CWE-79

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

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

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