CVE-2026-111383 Nezha 2.0.13 before 2.3.15 Denial of Service via /api/v1/ws/transfer WebSocket
Authenticated attackers can exhaust server resources via unbounded WebSocket connections, causing denial of service in Nezha.
- 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-2026-111383?
CVE-2026-111383 is a high-severity denial of service vulnerability in nezhahq nezha, published on 16 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Nezha from 2.0.13 before 2.3.15 contains a resource exhaustion vulnerability that allows authenticated users to open unbounded concurrent connections to the /api/v1/ws/transfer WebSocket endpoint. Attackers can hold thousands of subscriptions created by ServerTransferClass.Subscribe without limits, exhausting file descriptors, memory, and goroutines and blocking agent gRPC reconnections.
Weakness: CWE-770
Which versions are affected by CVE-2026-111383?
How do I fix CVE-2026-111383?
No fix has been published for CVE-2026-111383 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-2026-111383 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-111383 exists.
Sources
Also known as GHSA-44hc-q89j-v46p, GHSA-ch6h-w872-77mx.