CVE-2026-46717

HIGH 7.7

Nezha Monitoring: RoleMember-reachable SSRF with full response-body reflection via POST /api/v1/notification

CVSS Score

7.7

EPSS Score

0.0%

EPSS Percentile

9th

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 1.4.0 to before version 2.0.8, nezha's dashboard supports two user roles: RoleAdmin (Role==0) and RoleMember (Role==1). The notification routes POST /api/v1/notification and PATCH /api/v1/notification/:id are wired through commonHandler rather than adminHandler — so a RoleMember user can call them. These handlers synchronously Send() an HTTP request to a user-controlled URL and reflect the entire response body (no size limit) back to the caller on any non-2xx response. This issue has been patched in version 2.0.8.

CWE	CWE-863 CWE-918
Vendor	nezhahq
Product	nezha
Published	Jun 12, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

nezhahq / nezha

>= 1.4.0, < 2.0.8

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/nezhahq/nezha/security/advisories/GHSA-w4g9-mxgg-j532