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Vulnerability record · CVE-2026-39878 · published 20 July 2026

CVE-2026-39878: Cross-site scripting vulnerability

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.

9.3 CVSS 3.1 Critical EPSS 0.43% · top 64.8% CWE-79 · Cross-site scripting Deferred
9.3CVSS 3.1 base score
0.43%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
21 Aug 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

References

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

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Source: NIST National Vulnerability Database (record CVE-2026-39878), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.