CVE-2026-33061 Jexactyl has Stored DOM Cross-Site Scripting (XSS) via unescaped JSON in Blade template

Medium 5.8 Published 20 Mar 2026 Updated 30 Mar 2026

Attackers can inject malicious scripts via unescaped JSON in Blade templates, leading to arbitrary code execution for users viewing the page.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2026-33061?

CVE-2026-33061 is a medium-severity cross-site scripting vulnerability in Jexactyl, published on 20 Mar 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

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.

Weakness: CWE-79

Which versions are affected by CVE-2026-33061?

It affects 1 product.

Products include Jexactyl Jexactyl.

How do I fix CVE-2026-33061?

No fix has been published for CVE-2026-33061 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2026-33061 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33061 exists.

Sources

Also known as GHSA-6xgw-mmmv-57h2.