Nezha Monitoring: Nezha WebSocket server stream discloses cross-tenant server telemetry to authenticated members — CVE-2026-47124

Summary

### Summary Any authenticated non-admin member can connect to the server-status WebSocket and receive telemetry for all servers, including servers owned by other users. The normal server list API filters objects by `HasPermission`, but the WebSocket stream treats the presence of any authenticated user as authorization for the full unfiltered server list. ### Details The server WebSocket route is registered under…

Product

go: github.com/nezhahq/nezha

What to do

General, cautious steps (verify details in the official source):

• Review exposure and plan remediation based on risk and environment.
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

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