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CVE PROGRAM SOURCE RECORD6.5 Medium

CVE-2026-47124

Nezha WebSocket server stream discloses cross-tenant server telemetry to authenticated members

Description

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 1.4.0 to before version 2.0.9, 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. This issue has been patched in version 2.0.9.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

nezhahq nezha

  • >= 1.4.0, < 2.0.9affected

References