CVE-2026-46717 | THREATINT

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.

PUBLISHED Reserved 2026-05-15 | Published 2026-06-12 | Updated 2026-06-13 | Assigner GitHub_M

HIGH: 7.7CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Problem types

CWE-863: Incorrect Authorization

CWE-918: Server-Side Request Forgery (SSRF)

Product status

>= 1.4.0, < 2.0.8

affected

References

github.com/.../nezha/security/advisories/GHSA-w4g9-mxgg-j532 exploit

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

cve.org (CVE-2026-46717)

nvd.nist.gov (CVE-2026-46717)

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