CVE-2026-33061: Jexactyl

Medium severity, CVSS 5.4. EPSS: 0.2% chance of exploitation in the next 30 days.

Jexactyl is a customisable game management panel and billing system. Commits after 025e8dbb0daaa04054276bda814d922cf4af58da and before e28edb204e80efab628d1241198ea4f079779cfd inject server-side objects into client-side JavaScript through resources/views/templates/wrapper.blade.php. Using unescaped {!! json_encode(...) !!} without safe encoding flags allows string values to break out of the JavaScript context and be interpreted as HTML/JS by the browser. If any serialized fields contain attacker-controlled content, such as a username, display name, or site config value, a malicious payload will execute arbitrary script for any user viewing the page (stored DOM XSS). This issue has been patched by commit e28edb204e80efab628d1241198ea4f079779cfd.

Affected products

• Jexactyl Jexactyl: up to and including 3.8.0; version 4.0.0 only

Published 2026-03-20. Last modified 2026-06-17.