CVE-2026-47124 — Nezha WebSocket server stream discloses cross-tenant server telemetry to authenticated members
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 ca…
Published: 2026-06-12 · CVSS: 6.5 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7