CVE-2026-105113 Nezha 1.8.0 before 2.3.13 Denial of Service via Notification Mutex Deadlock
Authenticated non-admin users can deadlock the alerting subsystem and exhaust memory via specific notification API calls in Nezha Dashboard.
- 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-2026-105113?
CVE-2026-105113 is a high-severity denial of service 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 Dashboard from 1.8.0 before 2.3.13 contains an improper locking vulnerability where a non-deferred mutex unlock leaks on a nil-map panic path. Any authenticated non-admin member can issue four notification API calls to permanently deadlock the alerting subsystem, then exhaust memory with blocking requests.
Weakness: CWE-667
Which versions are affected by CVE-2026-105113?
How do I fix CVE-2026-105113?
No fix has been published for CVE-2026-105113 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-105113 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-105113 exists.
Sources
Also known as GHSA-2w9f-mhfg-hq53, GHSA-7j7v-j77m-6g3m.