CVE-2026-46716: Nezhahq Nezha

Critical severity, CVSS 9.9. EPSS: 0.5% chance of exploitation in the next 30 days.

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.

Affected products

• Nezhahq Nezha: from 1.4.0, before 2.0.8 (fixed in 2.0.8)

Published 2026-06-12. Last modified 2026-06-17.