CVE-2026-107854 Jexactyl: Free-billing order endpoint renews and unsuspends arbitrary servers by ID (missing ownership check)

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 serverid and loads the server without restricting the lookup to servers owned by the authenticated account. On installations...