CVE-2026-39878
CRITICAL
NVD
CVSS Score
9.3
Severity
CRITICAL
Published
Jul 20, 2026
Vendor
unknown
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.