What is CVE-2025-55289?

CVE-2025-55289 is a high-severity vulnerability in Chamilo Chamilo-lms, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2026-03-06.

How severe is CVE-2025-55289?

High severity. CVSS v3 base score is 8.8 out of 10.

XSS in Chamilo Chamilo-lms

CVE-2025-55289

Chamilo is a learning management system. Prior to version 1.11.34, there is a stored XSS vulnerability in Chamilo LMS (Verison 1.11.32) allows an attacker to inject arbitrary JavaScript into the platform’s social network and internal messa…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (5.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Chamilo Chamilo-lms — versions < 1.11.34

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-cchj-3qmf-82j5 (x_refsource_CONFIRM)
https://github.com/chamilo/chamilo-lms/releases/tag/v1.11.34 (x_refsource_MISC)

Frequently asked questions

What is CVE-2025-55289?: CVE-2025-55289 is a high-severity vulnerability in Chamilo Chamilo-lms, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2026-03-06.
How severe is CVE-2025-55289?: High severity. CVSS v3 base score is 8.8 out of 10.