CVE-2026-46717
HIGH EPSS 18.5%
Published Jun 12, 20263w ago · Modified Jun 17, 20262w ago
7.7 CVSS 3.1
Published Jun 12, 2026 3w ago
Last Modified Jun 17, 2026 2w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
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
Threat Intelligence
EPSS Exploit Probability
18.5% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 2
CWE-863 Incorrect Authorization Authorization
CWE-918 Server-Side Request Forgery (SSRF) Validation
References 1
- github.com https://github.com/nezhahq/nezha/security/advisories/GHSA-w4g9-mxgg-j532
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.