CVE-2025-55208 CRITICAL

CVE-2025-55208: Chamilo LMS has Stored Cross Site Scripting on Social Networks Uploaded Files

Vendor Chamilo
Product chamilo-lms
Weakness CWE-79 · XSS
Published March 5, 2026
Last update March 6, 2026
View on NVD All CVEs

CVSS base score

9.1/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

What the vulnerability does

01Description

Chamilo is a learning management system. Versions prior to 1.11.34 have a Stored XSS through insecure file uploads in `Social Networks`. Through it, a low-privilege user can execute arbitrary code in the admin user inbox, allowing takeover of the admin account. Version 1.11.34 fixes the issue.

Key dates

02Disclosure timeline

March 5, 2026 CVE published
March 6, 2026 Record updated