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CVE-2026-47124— Nezha WebSocket server stream discloses cross-tenant server telemetry to authenticated members

Quick assessment

Affected
nezhahq nezha
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

nezha是nezhahq组织的一款自托管、轻量级的服务器和网站监控及运维工具。 nezhahq nezha 1.4.0版本至2.0.9之前版本存在信息泄露漏洞，该漏洞源于WebSocket流未正确过滤服务器列表权限，可能导致任何经过身份验证的非管理员成员接收所有服务器的遥测数据。

CVSS 6.5 · Medium EPSS 0.37% · P29

Affected Version Matrix 1

VendorProduct Version RangeStatus
nezhahq nezha >= 1.4.0, < 2.0.9 affected
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I. Basic Information for CVE-2026-47124

Vulnerability Information
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Vulnerability Title
Nezha WebSocket server stream discloses cross-tenant server telemetry to authenticated members
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
nezhahq nezha 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
nezha是nezhahq组织的一款自托管、轻量级的服务器和网站监控及运维工具。 nezhahq nezha 1.4.0版本至2.0.9之前版本存在信息泄露漏洞，该漏洞源于WebSocket流未正确过滤服务器列表权限，可能导致任何经过身份验证的非管理员成员接收所有服务器的遥测数据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
nezhahq nezha >= 1.4.0, < 2.0.9 -

II. Public POCs for CVE-2026-47124

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III. Intelligence Information for CVE-2026-47124

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Vendor Advisories for CVE-2026-47124 (1)

Same Patch Batch · nezhahq · 2026-06-12 · 13 CVEs total

CVE-2026-46716 9.9 CRITICAL Nezha Monitoring: RoleMember can run shell on every server (cross-tenant RCE) via POST /ap
CVE-2026-53519 9.1 CRITICAL Nezha Monitoring: Pre-auth path traversal via /dashboard.. prefix confusion leaks jwt_secr
CVE-2026-46717 7.7 HIGH Nezha Monitoring: RoleMember-reachable SSRF with full response-body reflection via POST /a
CVE-2026-47120 7.1 HIGH Nezha Monitoring: RoleMember can fire other users' cron tasks via AlertRule.FailTriggerTas
CVE-2026-48119 7.1 HIGH Nezha Monitoring: Authenticated agents can forge service-monitor results for other users'
CVE-2026-49396 7.1 HIGH Nezha Monitoring: Cross-site GET request can trigger stored cron commands on a victim's ag
CVE-2026-53523 6.8 MEDIUM Nezha Monitoring: OAuth2 Redirect URL — Host Header Injection
CVE-2026-53520 6.5 MEDIUM Nezha Monitoring: Authenticated users can claim the dashboard Host through NAT and preempt
CVE-2026-53522 6.5 MEDIUM Nezha Monitoring: Unbounded WebSocket Streams — Resource Exhaustion DoS
CVE-2026-53521 6.4 MEDIUM Nezha Monitoring: Stored future DDNS profile ID allows unauthorized use of another user's
CVE-2026-47268 6.4 MEDIUM Nezha Monitoring: Authenticated DDNS webhook configuration allows blind SSRF from the dash
CVE-2026-49397 5.3 MEDIUM Nezha Monitoring: Private services (`EnableShowInService: false`) are enumerable via per-s

IV. Related Vulnerabilities

Same product: nezha
Same vendor: nezhahq
Same weakness: CWE-200

V. Comments for CVE-2026-47124

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