CVE-2026-47124Public exploitNetwork attack vector

Cross-tenant telemetry disclosure via unfiltered WebSocket stream

Published Jun 12, 2026 · Updated Jun 12, 2026

Authorization bypass in Nezha Monitoring 1.4.0 through 2.0.8 allows remote authenticated users to read cross-tenant server telemetry. The serverStream handler reduces authorization to a member-versus-guest boolean and passes it to getServerStat, which returns the full server list without HasPermission ownership checks. Any non-admin member can continuously read other users’ host details and operational state through the default dashboard WebSocket endpoint.

CVSS severity6.5
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Nezha Monitoring 1.4.0 through 2.0.8 allows remote authenticated users to read cross-tenant server telemetry. The serverStream handler reduces authorization to a member-versus-guest boolean and passes it to getServerStat, which returns the full server list without HasPermission ownership checks. Any non-admin member can continuously read other users’ host details and operational state through the default dashboard WebSocket endpoint.

The record

CVE
CVE-2026-47124
Published
Jun 12, 2026
Updated
Jun 12, 2026
Vendor
NezhaHQ
Product
Nezha Monitoring
Classifications
CWE-200, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 12, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 1.4.0, < 2.0.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

NezhaHQ · Nezha Monitoringversion=>= 1.4.0, < 2.0.9

Published CVSS scores

6.5GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1213Data from Information Repositories

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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