CVE-2026-101085 Nezha before 2.3.8 Denial of Service via Alert Rule
Authenticated users can crash the Nezha dashboard by submitting malformed alert rules, causing persistent service outages.
- 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-2026-101085?
CVE-2026-101085 is a high-severity denial of service vulnerability in nezhahq nezha, published on 27 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Nezha before 2.3.8 fails to validate alert rule type and duration bounds, allowing authenticated non-administrator users to create malformed rules that trigger unrecovered panics in the alert evaluator goroutine. Attackers can submit a crafted alert rule via the POST /api/v1/alert-rule endpoint to crash the dashboard process, which persists the rule and causes repeated crashes on restart, disabling all monitoring and control plane functionality.
Weakness: CWE-197
Which versions are affected by CVE-2026-101085?
How do I fix CVE-2026-101085?
No fix has been published for CVE-2026-101085 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-2026-101085 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-101085 exists.
Sources
Also known as GHSA-2qc6-x993-hjq9, GHSA-5j6x-8f94-88gc.