Stored Cross-Site Scripting Flaw in Chamilo Learning Management System
CVE-2025-59543

9.1CRITICAL

Key Information:

Vendor

Chamilo

Status
Chamilo-lms
Vendor
CVE Published:
6 March 2026

What is CVE-2025-59543?

The Chamilo Learning Management System prior to version 1.11.34 is vulnerable to a stored cross-site scripting attack. This flaw allows an attacker, even with low privileges, to inject malicious JavaScript code into course descriptions. When other users view the affected course, including those with administrative rights, the injected script can execute in their browsers, enabling the attacker to steal sensitive session cookies or tokens. This poses a significant risk of account takeover for higher-privileged users. The vulnerability has been addressed and patched in version 1.11.34.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch

Affected Version(s)

chamilo-lms < 1.11.34

References

https://github.com/chamilo/chamilo-lms/security/advisorie...
x_refsource_CONFIRM
https://github.com/chamilo/chamilo-lms/releases/tag/v1.11.34
x_refsource_MISC

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
.