PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-46716 nezhahq CVE debrief

A critical vulnerability was discovered in Nezha Monitoring, a self-hostable, lightweight monitoring and O&M tool. The vulnerability allows a RoleMember user to create a scheduled cron task with Cover=CronCoverAll, Servers=[] and an arbitrary Command. At every tick of the scheduler, the dashboard pushes that command to every server in the global ServerShared map — including servers that belong to other tenants (admin's servers, other members' servers). Each agent runs the command and returns the output, which is then sent to the attacker's own NotificationGroup → attacker-controlled webhook. This issue has been patched in version 2.0.8.

Vendor
nezhahq
Product
nezha
CVSS
CRITICAL 9.9
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-12
Original CVE updated
2026-06-15
Advisory published
2026-06-12
Advisory updated
2026-06-15

Who should care

Administrators and users of Nezha Monitoring, especially those who have not upgraded to version 2.0.8, should be aware of this vulnerability and take immediate action to patch their systems.

Technical summary

The vulnerability has a CVSS score of 9.9 and is classified as CRITICAL. It can be exploited by a RoleMember user to execute arbitrary commands on servers belonging to other tenants. The vulnerability is caused by a lack of proper validation and authorization in the scheduled cron task feature.

Defensive priority

High

Recommended defensive actions

  • Upgrade Nezha Monitoring to version 2.0.8 or later.
  • Restrict access to the scheduled cron task feature to authorized users only.
  • Monitor system logs for suspicious activity.

Evidence notes

The vulnerability was reported by an unknown source and patched in version 2.0.8. The CVE record and NVD detail can be found at [cve-org] and [nvd], respectively. Additional information can be found at [ref-4].

Sources and references

Verified primary and authoritative sources

  • CVE-2026-46716 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-46716

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-46716 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-46716

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.