CVE-2026-105112: Nezhahq Nezha

Medium severity, CVSS 5.3. EPSS: 0.2% chance of exploitation in the next 30 days.

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 and close an ABBA cycle, permanently killing alert delivery until restart.

Affected products

• Nezhahq Nezha: from 1.8.0, before 2.3.13 (fixed in 2.3.13)

Published 2026-10-03. Last modified 2026-10-05.