Unrated severityNVD Advisory· Published Jul 20, 2026· Updated Jul 20, 2026
Chamilo stored XSS via user registration leads to admin account takeover
CVE-2026-39878
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.
Affected products
1Patches
Vulnerability mechanics
References
1- github.com/chamilo/chamilo-lms/security/advisories/GHSA-gcjp-f7jm-rrrgmitrex_refsource_CONFIRM
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