CVE-2026-107854
Jexactyl: Free-billing order endpoint renews and unsuspends arbitrary servers by ID (missing ownership check)
CVSS Score
5.4
EPSS Score
0.0%
EPSS Percentile
0th
Jexactyl 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.
| CWE | CWE-639 |
| Vendor | jexactyl |
| Product | jexactyl |
| Published | Oct 9, 2026 |
Stay Ahead of the Next One
Get instant alerts for jexactyl jexactyl
Be the first to know when new medium vulnerabilities affecting jexactyl jexactyl are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
Low
Affected Versions
Jexactyl / Jexactyl
>= 4.0.0, < 4.0.5