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

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Summary

CVECVE-2026-33061
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-20 08:16:12 UTC
Updated2026-03-30 13:16:22 UTC
DescriptionJexactyl 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.

Risk And Classification

Primary CVSS: v3.1 5.8 MEDIUM from [email protected]

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

EPSS: 0.000190000 probability, percentile 0.049150000 (date 2026-04-01)

Problem Types: CWE-79 | CWE-79 CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.8MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N
3.1CNADECLARED5.8MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Jexactyl Jexactyl affected >= 025e8dbb0daaa04054276bda814d922cf4af58da, < e28edb204e80efab628d1241198ea4f079779cfd Not specified

References

ReferenceSourceLinkTags
github.com/Jexactyl/Jexactyl/commit/e28edb204e80efab628d1241198ea4f07977... [email protected] github.com
github.com/Jexactyl/Jexactyl/security/advisories/GHSA-6xgw-mmmv-57h2 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
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