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CVE-2026-46716

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

Description (CNA)

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 (CNA)

Vendor / productVersions
nezhahq / nezhaaffected >= 1.4.0, < 2.0.8

CWE

CWE-78, CWE-269, CWE-862

References

ADP enrichment

CISA-ADP

No English description supplied.