CVE-2026-46716CWE-269CWE-78CWE-862

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

Critical · published June 12, 2026

CVSS v3.1
9.9
EPSS
0%
Percentile
41.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.9 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00491 · 41.2th percentile
Weaknesses
CWE-269 · Improper Privilege Management; CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'); CWE-862 · Missing Authorization
Published
2026-06-12T21:00Z
EPSS history
Timeline
  • 12 JUN 21:00Z
    Nezha Monitoring: RoleMember can run shell on every server (cross-tenant RCE) via POST /api/v1/cron
    cvelistv5