Security Advisory
CVE-2026-39878
9.3
CRITICAL
Vulnerability Description
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.
Published Date
July 20, 2026
Official Source
NIST NVD Advisory