CVE-2026-39878

PUBLISHED
Published: 20 Jul 2026, 17:08
Last modified:20 Jul 2026, 18:54

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.3 CRITICAL
v3.1 (cve.org)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

20 Jul 2026, 17:08
Published
Vulnerability first disclosed
20 Jul 2026, 18:54
Last Modified
Vulnerability information updated

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 Metrics

  • v3.1•CRITICAL•Score: 9.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Techniques & Countermeasures

  • CWE-79•Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

    The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Affected Systems

  • chamilo•chamilo-lms

    ≤ 1.11.38

References (1)