Game Management Panel Vulnerability in Jexactyl
CVE-2026-107854

5.4MEDIUM

Key Information:

Vendor

Jexactyl

Status
Jexactyl
Vendor
CVE Published:
9 October 2026

What is CVE-2026-107854?

A vulnerability exists in Jexactyl, a customizable game management panel and billing system, across versions 4.0.0 to 4.0.5. The issue arises from the POST /api/client/billing/free/process endpoint, which does not appropriately restrict access based on ownership of the server. This flaw enables authenticated users to renew or unsuspend another user's billable server even when significant time remains until the scheduled renewal date. The vulnerability is mitigated in version 4.0.5, where proper checks have been implemented to ensure users can only manage servers they own.

Affected Version(s)

Jexactyl >= 4.0.0, < 4.0.5

References

https://github.com/Jexactyl/Jexactyl/security/advisories/...
x_refsource_CONFIRM
https://github.com/Jexactyl/Jexactyl/commit/356a5b46a18d4...
x_refsource_MISC
https://github.com/Jexactyl/Jexactyl/releases/tag/v4.0.5
x_refsource_MISC

CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.