What’s Vulnerable › Vulnerabilities

CVE-2026-30882: Chamilo LMS: Reflected XSS in the session category listing page

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-16 · updated 2026-06-17
• Weakness: CWE-79

Description

Chamilo LMS is a learning management system. Chamilo LMS version 1.11.34 and prior contains a Reflected Cross-Site Scripting (XSS) vulnerability in the session category listing page. The keyword parameter from $_REQUEST is echoed directly into an HTML href attribute without any encoding or sanitization. An attacker can inject arbitrary HTML/JavaScript by breaking out of the attribute context using ">followed by a malicious payload. The vulnerability is triggered when the pagination controls are rendered — which occurs when the number of session categories exceeds 20 (the page limit). This issue has been patched in version 1.11.36.

Affected products

• chamilo-lms: before 1.11.36 — fixed in 1.11.36

How to fix

Upgrade to a fixed version: chamilo-lms 1.11.36. Check the vendor advisory for mitigations.

References

• https://github.com/chamilo/chamilo-lms/releases/tag/v1.11.36
• https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-qg5f-gq95-9vhq

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