NULL pointer dereference in Nezhahq Nezha
CVE-2026-120046
Nezha 2.0.0 before 2.4.0 contains a NULL pointer dereference vulnerability in ServiceSentinel.loadTodayStats that allows authenticated users to crash the dashboard by deleting a service. Attackers can delete their own service via POST /api/v1/batch-delete/service, leaving orphaned service_histories rows that crash the non-TSDB dashboard on its next startup until removed manually.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/nezhahq/nezha/commit/efd3e07b901d6acf7ef2ab3b26458cc07e7605dc (patch)
- github.com/nezhahq/nezha/releases/tag/v2.4.0 (release-notes)
- github.com/nezhahq/nezha/blob/9881c47f0cc92256ba203919da5a25fab79a6bad/service/… (technical-description)
- github.com/nezhahq/nezha/blob/9881c47f0cc92256ba203919da5a25fab79a6bad/cmd/dash… (technical-description)
- github.com/nezhahq/nezha (product)
- www.vulncheck.com/advisories/nezha-2.0.0-before-2.4.0-startup-null-pointer-dere… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-120046?
- CVE-2026-120046 is a medium-severity vulnerability in Nezhahq Nezha, classified under NULL Pointer Dereference. CVSS score: 5.3/10. Published 2026-10-30.
- How severe is CVE-2026-120046?
- Medium severity. CVSS v3 base score is 5.3 out of 10.