What is CVE-2025-59543?

CVE-2025-59543 is a critical-severity vulnerability in Chamilo Chamilo-lms, classified under Cross-site Scripting. CVSS score: 9.1/10. Published 2026-03-06.

How severe is CVE-2025-59543?

Critical severity. CVSS v3 base score is 9.1 out of 10.

XSS in Chamilo Chamilo-lms

CVE-2025-59543

Chamilo is a learning management system. Prior to version 1.11.34, there is a stored cross-site scripting (XSS) vulnerability. By injecting malicious JavaScript into the course description field, an attacker with a low-privileged account (…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.001 (18.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/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-p32q-6gh3-3gcv (x_refsource_CONFIRM)
https://github.com/chamilo/chamilo-lms/releases/tag/v1.11.34 (x_refsource_MISC)

Frequently asked questions

What is CVE-2025-59543?: CVE-2025-59543 is a critical-severity vulnerability in Chamilo Chamilo-lms, classified under Cross-site Scripting. CVSS score: 9.1/10. Published 2026-03-06.
How severe is CVE-2025-59543?: Critical severity. CVSS v3 base score is 9.1 out of 10.