XSS in Chamilo Chamilo-Lms
CVE-2025-59540
Chamilo is a learning management system. Prior to version 1.11.34, a stored XSS vulnerability exists in Chamilo LMS that allows a staff account to execute arbitrary JavaScript in the browser of higher-privileged admin users. The issue arises because feedback input in the exercise history page is not properly encoded before rendering, allowing malicious scripts to persist in the database and execute on view. This issue has been patched in version 1.11.34.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (6.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 6.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Chamilo Chamilo-Lms — versions < 1.11.34
- Chamilo Lms
Weakness classification (CWE)
References
- github.com/chamilo/chamilo-lms/security/advisories/GHSA-59h4-34mx-m67m (Vendor Advisory)
- github.com/chamilo/chamilo-lms/releases/tag/v1.11.34 (Product, Release Notes)
Frequently asked questions
- What is CVE-2025-59540?
- CVE-2025-59540 is a medium-severity vulnerability in Chamilo Chamilo-Lms, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-03-06.
- How severe is CVE-2025-59540?
- Medium severity. CVSS v3 base score is 5.4 out of 10.