CVE-2026-111384 Nezha 1.0.0 before 2.3.15 Memory Exhaustion via File Manager WebSocket
Authenticated users can cause a denial of service by sending oversized WebSocket messages to the file manager endpoint, crashing the monitoring 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-2026-111384?
CVE-2026-111384 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 1.0.0 before 2.3.15 contains a memory exhaustion vulnerability in the dashboard file manager WebSocket endpoint because fmStream never calls SetReadLimit, leaving message size unbounded. Authenticated users with file manager scopes can send one oversized binary message to /api/v1/ws/file/:id, triggering an OOM kill that drops all agent monitoring.
Weakness: CWE-770
Which versions are affected by CVE-2026-111384?
How do I fix CVE-2026-111384?
No fix has been published for CVE-2026-111384 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-2026-111384 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-111384 exists.
Sources
Also known as GHSA-7242-982f-83p9, GHSA-ggj9-3h4w-qv8p.