CVE-2026-120046

    Dashboard / Vulnerabilities / CVE-2026-120046

    CVE-2026-120046

    Published: 30 Oct 2026Last Modified: 5 Nov 2026

    Summary: Nezha 2.0.0 before 2.4.0 Startup NULL Pointer Dereference via Orphaned Service History

    Details: 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.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/120xxx/CVE-2026-120046.json, https://github.com/nezhahq/nezha/releases/tag/v2.4.0, https://nvd.nist.gov/vuln/detail/CVE-2026-120046, https://www.vulncheck.com/advisories/nezha-2.0.0-before-2.4.0-startup-null-pointer-dereference-via-orphaned-service-history, https://github.com/nezhahq/nezha/commit/efd3e07b901d6acf7ef2ab3b26458cc07e7605dc, https://github.com/nezhahq/nezha, https://github.com/nezhahq/nezha/blob/9881c47f0cc92256ba203919da5a25fab79a6bad/cmd/dashboard/controller/service.go#L639, https://github.com/nezhahq/nezha/blob/9881c47f0cc92256ba203919da5a25fab79a6bad/service/singleton/servicesentinel.go#L434

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- e61772e85878d2fc85be3e5b2042946aaa0c454f
    Fixed -2bd1a864290ffaf47b34adfff5a032b374ce2771

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-120046 | CVE-DB