Jexactyl: Free-billing order endpoint renews and unsuspends arbitrary servers by ID (missing ownership check)

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-107854
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-09 21:17:03 UTC
Updated2026-10-09 21:17:03 UTC
DescriptionJexactyl is a customisable game management panel and billing system. From 4.0.0 until 4.0.5, the POST /api/client/billing/free/process endpoint accepts a client-controlled server_id and loads the server without restricting the lookup to servers owned by the authenticated account. On installations with billing enabled, an authenticated user can renew or unsuspend another tenant's billable server when its renewal_date is non-null and more than seven days away, even without a subuser relationship to that server. This issue is fixed in version 4.0.5.

Risk And Classification

Primary CVSS: v3.1 5.4 MEDIUM from [email protected]

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

EPSS: 0.002110000 probability, percentile 0.105540000 (date 2026-10-11)

Problem Types: CWE-639 | CWE-639 CWE-639: Authorization Bypass Through User-Controlled Key

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
3.1CNADECLARED5.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Jexactyl Jexactyl affected >= 4.0.0, < 4.0.5 Not specified

References

ReferenceSourceLinkTags
github.com/Jexactyl/Jexactyl/releases/tag/v4.0.5 [email protected] github.com
github.com/Jexactyl/Jexactyl/security/advisories/GHSA-9xwv-p7r5-5h5p [email protected] github.com
github.com/Jexactyl/Jexactyl/commit/356a5b46a18d483ae90c862e130b1969e6df... [email protected] github.com
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