Critical 9.3Published Jul 20, 2026

CVE-2026-39878Chamilo stored XSS via user registration leads to admin account takeover

Updated under an hour ago (Oct 27, 2026, 4:50 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for chamilo-lms

Exploited in the last 30 days

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.

CVSS: 9.3 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Aug 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

chamilo chamilo-lms chamilo:lms (from the name)	through 1.11.38	CNA record

References

References

https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-gcjp-f7jm-rrrg	x-refsource-confirm
https://vokecyber.com/research/cve-2026-39878-chamilo-lms-stored-xss	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.