CVE-2026-105112 Nezha 1.8.0 before 2.3.13 Deadlock DoS via notification-group endpoints

Nezha from 1.8.0 before 2.3.13 contains a lock-order inversion in UpdateGroup and DeleteGroup that allows authenticated non-admin users to deadlock the alerting subsystem. Attackers can concurrently call the notification-group and batch-delete endpoints with oversized id lists to widen the race a...