CVE-2026-46716: critical vulnerability in nezhahq nezha
Nezha Monitoring: RoleMember can run shell on every server (cross-tenant RCE) via POST /api/v1/cron
Published · Updated
48Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 9.9epss 0.5%
from disclosure to weapon0 days
Published on NVDJun 12
1st PoCMay 30
exploitation probability
0.5%top 59% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected products
nezhahq · nezhapublic PoCs found — 1
githubgithub.com/HAERIN-L/POC_CVE-2026-46716★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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