CVE-2026-39878
Chamilo stored XSS via user registration leads to admin account takeover
CVSS Score
9.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-79 |
| Vendor | chamilo |
| Product | chamilo-lms |
| Published | Jul 20, 2026 |
| Last Updated | Jul 20, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
chamilo / chamilo-lms
<= 1.11.38