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
Updated2026-04-14 17:56:38 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 5.4 MEDIUM from [email protected]

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

EPSS: 0.000240000 probability, percentile 0.064320000 (date 2026-04-15)

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

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
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
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Jexactyl Jexactyl 4.0.0 beta1 All All
Application Jexactyl Jexactyl 4.0.0 beta2 All All
Application Jexactyl Jexactyl 4.0.0 beta3 All All
Application Jexactyl Jexactyl 4.0.0 beta4 All All
Application Jexactyl Jexactyl 4.0.0 beta5 All All
Application Jexactyl Jexactyl 4.0.0 beta6 All All
Application Jexactyl Jexactyl 4.0.0 beta7 All All
Application Jexactyl Jexactyl 4.0.0 rc1 All All
Application Jexactyl Jexactyl 4.0.0 rc2 All All
Application Jexactyl Jexactyl All All All All

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 Patch
github.com/Jexactyl/Jexactyl/security/advisories/GHSA-6xgw-mmmv-57h2 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com Exploit, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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