CVE-2026-46717

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

State: Published
Severity: 7.7 High
Published: Jun 12, 2026
Updated: Jun 13, 2026
Reserved: May 15, 2026

Description

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 1.4.0 to before version 2.0.8, 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.

Scores

CVSS	Score	Vector	Source
3.1	7.7 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N	GitHub_M

Weaknesses

CWE-863 Incorrect Authorization
CWE-918 Server-Side Request Forgery (SSRF)

Affected Products

Product	Versions
nezhanezhahq	>= 1.4.0, < 2.0.8Affected

References

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

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