CVE-2026-101085GHSA-2qc6-x993-hjq9
Nezha before 2.3.8 Denial of Service via Alert Rule
nezhahq nezha
CVSS
7.1HighExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 28 Sep 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.25%Chance of exploitation activity in the next 30 days, higher than 15% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 2.3.8nezhaCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
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.
Text from CVE List
Affected versions 2
- nezhaaffected: all versions before 2.3.8CVE List
- nezhaunaffected: 2.3.8CVE List