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Vulnerability record · CVE-2025-55208 · published 5 March 2026

CVE-2025-55208: Chamilo lms cross-site scripting vulnerability

Chamilo · Chamilo Lms

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.

9.0 CVSS 3.1 Critical EPSS 0.31% · top 78.9% CWE-79 · Cross-site scripting
9.0CVSS 3.1 base score
0.31%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2026-33707Chamilo lms weak password recovery vulnerabilityChamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, the default password reset mechanism generates tokens using sha1($email…EPSS 0.75%9.8CVE-2025-50187Chamilo lms vulnerabilityChamilo is a learning management system. Prior to version 1.11.28, parameter from SOAP request is evaluated without filtering which leads to Remote C…EPSS 0.88%9.8CVE-2023-34944Chamilo lms unrestricted file upload vulnerabilityAn arbitrary file upload vulnerability in the /fileUpload.lib.php component of Chamilo 1.11.* up to v1.11.18 allows attackers to execute arbitrary co…EPSS 1.1%9.8CVE-2022-27423Chamilo lms sql injection vulnerabilityChamilo LMS v1.11.13 was discovered to contain a SQL injection vulnerability via the blog_id parameter at /blog/blog.php.EPSS 0.99%9.8CVE-2021-35414Chamilo lms sql injection vulnerabilityChamilo LMS v1.11.x was discovered to contain a SQL injection via the doc parameter in main/plagiarism/compilatio/upload.php.EPSS 1.9%9.8CVE-2019-13082Chamilo lms unrestricted file upload vulnerabilityChamilo LMS 1.11.8 and 2.x allows remote code execution through an lp_upload.php unauthenticated file upload feature. It extracts a ZIP archive befor…EPSS 4.0%9.8CVE-2018-1999019Chamilo lms code injection vulnerabilityChamilo LMS version 11.x contains an Unserialization vulnerability in the "hash" GET parameter for the api endpoint located at /webservices/api/v2.ph…EPSS 3.2%9.3CVE-2026-33698Chamilo lms vulnerabilityChamilo LMS is a learning management system. Prior to 1.11.38, a chained attack can enable otherwise-blocked PHP code from the main/install/ director…EPSS 0.58%

Source: NIST National Vulnerability Database (record CVE-2025-55208), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.