CVE-2026-39878

CriticalCVSS 9.3

Published: 20/07/2026(UTC)Updated: 22/07/2026(UTC)Translated: 23/07/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.24%

15th percentile - higher than 15% of all known CVEs

Summary

Chamilo LMS versions 1.11.38 and earlier contain a stored cross-site scripting vulnerability in the user registration form. An unauthenticated attacker can execute arbitrary JavaScript in an administrator's browser session, leading to full platform admin account takeover.

Risk Assessment

Critical risk of full admin account takeover on the educational platform by an unauthenticated attacker.

Recommendation

Update Chamilo LMS to version 1.11.40 or later.

Original NVD description (English source)

Chamilo LMS versions 1.11.38 and earlier contain a stored cross-site scripting vulnerability in the user registration form that allows any unauthenticated attacker to execute arbitrary JavaScript in an administrator's browser session, leading to full platform admin account takeover. This has been patched in 1.11.40.