CVE-2026-101085

7.1 highEPSS 0.3%

High (7.1). EPSS 0.3% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

7.1 high

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

6.5 medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 22% of CVEs (scores of 2026-10-31)
CWE: CWE-197
Published: 2026-09-27
Modified: 2026-09-28
Record from: the NVD, synced 2026-10-19

References

https://github.com/nezhahq/nezha/security/advisories/GHSA-2qc6-x993-hjq9
https://www.vulncheck.com/advisories/nezha-before-2.3.8-denial-of-service-via-alert-rule
https://github.com/nezhahq/nezha/security/advisories/GHSA-2qc6-x993-hjq9

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