Description
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
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| nezhahq | nezha | 1.8.0 – < 2.3.13 | 2.3.13 |
References
- GitHub Security Advisory (GHSA-53vr-p24v-qvwf) vendor-advisory
- VulnCheck Advisory: Nezha 1.8.0 before 2.3.13 Deadlock DoS via notification-group endpoints third-party-advisory