What’s Vulnerable › Vulnerabilities
CVE-2025-55208: Chamilo LMS has Stored Cross Site Scripting on Social Networks Uploaded Files
- Severity: critical (CVSS 9.0 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: none known
- Published: 2026-03-05 · updated 2026-06-17
- Weakness: CWE-79
Description
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.
Affected products
- chamilo-lms: before 1.11.34 — fixed in 1.11.34
How to fix
Upgrade to a fixed version: chamilo-lms 1.11.34. Check the vendor advisory for mitigations.
References
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