CVE-2026-105112 Nezha 1.8.0 before 2.3.13 Deadlock DoS via notification-group endpoints
Authenticated non-admin users can deadlock the alerting subsystem in Nezha by exploiting a lock-order inversion, requiring an upgrade to restore service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-105112?
CVE-2026-105112 is a medium-severity vulnerability in nezhahq nezha, published on 3 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-362
Which versions are affected by CVE-2026-105112?
How do I fix CVE-2026-105112?
No fix has been published for CVE-2026-105112 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-105112 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-105112 exists.
Sources
Also known as GHSA-53vr-p24v-qvwf, GHSA-xjpm-v974-vhq4.