CVE-2026-46717: high-severity vulnerability in nezhahq nezha
Nezha Monitoring: RoleMember-reachable SSRF with full response-body reflection via POST /api/v1/notification
Published · Updated
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.7epss 0.4%
exploitation probability
0.4%top 71% of all CVEs
observed exploitation
nono source reports it
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:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Affected products
nezhahq · nezhaRelated CVEs — nezhahq nezha
In the same product, most dangerous first.
CVE-2026-53519CRITICALNezha Monitoring: Pre-auth path traversal via /dashboard.. prefix confusion leaks jwt_secret_keyEPSS 2.3%CVE-2026-62283CRITICALNezha Monitoring: Cross-tenant terminal/file-manager session hijack via WebSocket stream UUID without ownership checkEPSS 0.6%CVE-2026-46716CRITICALNezha Monitoring: RoleMember can run shell on every server (cross-tenant RCE) via POST /api/v1/cronEPSS 0.5%CVE-2026-59155MEDIUMNezha Monitoring: DDNS and Notification credential exposure via unredacted list APIEPSS 0.5%CVE-2026-100394MEDIUMNezha Monitoring: Whole-instance DoS in Nezha dashboard: a member can crash the process for every tenantEPSS 0.4%CVE-2026-53522MEDIUMNezha Monitoring: Unbounded WebSocket Streams — Resource Exhaustion DoSEPSS 0.4%