Information disclosure in Nezhahq Nezha

CVE-2026-47124

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.

Vulnerability class: Information Disclosure

EPSS: 0.003 (19.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-47124?
CVE-2026-47124 is a medium-severity vulnerability in Nezhahq Nezha, classified under Information Disclosure. CVSS score: 6.5/10. Published 2026-06-12.
How severe is CVE-2026-47124?
Medium severity. CVSS v3 base score is 6.5 out of 10.