CVE-2026-47124

MEDIUM

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

Title source: cna
STIX 2.1

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.

References (1)

Core 1
Core References

Scores

CVSS v3 6.5
EPSS 0.0027
EPSS Percentile 19.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-200
Status published
Products (2)
nezhahq/nezha 1.4.0 - 1.14.15-0.20260517034128-05e5da253519Go
nezhahq/nezha >= 1.4.0, < 2.0.9
Published Jun 12, 2026
Tracked Since Jun 13, 2026