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 โ 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 โ attacker-controlled webhook. This issue has been patched in version 2.0.8.
Details
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| github.com/nezhahq/nezha | โ | โ |
| unknown | โ | โ |
References
Similar Threats
- High CVE-2026-49396
- Medium CVE-2026-49397
- High CVE-2026-48119
- Medium CVE-2026-47268
- High CVE-2026-46717
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