CVE-2025-55208

Chamilo LMS has Stored Cross Site Scripting on Social Networks Uploaded Files

State: Published
Severity: 9.1 Critical
Published: Mar 5, 2026
Updated: Mar 6, 2026
Reserved: Aug 8, 2025

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.

Scores

CVSS	Score	Vector	Source
3.1	9.1 Critical	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H	GitHub_M

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Product	Versions
chamilo-lmschamilo	< 1.11.34Affected

References

https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-2vq2-826h-6hp6

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