Is CVE-2025-59543 actively exploited?

CVE-2025-59543 has no public evidence of in-the-wild exploitation as of 2026-03-09.

What is the CVSS score for CVE-2025-59543?

CVE-2025-59543 has a CVSS score of 9 (CRITICAL severity). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H.

How do I patch CVE-2025-59543?

Patch guidance is available from chamilo security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2025-59543.

Which products are affected by CVE-2025-59543?

1 product: chamilo chamilo lms.

Fix CVE-2025-59543 - CRITICAL chamilo chamilo lms

Description

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 (e.g., trainer) can execute arbitrary JavaScript code in the context of any other user viewing the course information page, including administrators. This allows an attacker to exfiltrate sensitive session cookies or tokens, resulting in account takeover (ATO) of higher-privileged users. This issue has been patched in version 1.11.34.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: low
User Action: required
Scope: changed
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-79 · Cross-site Scripting (XSS)

Metadata

Primary Vendor: CHAMILO
Published: 3/6/2026
Last Modified: 3/9/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2025-59543

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary