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9router has an Incomplete Fix: Local-Only Access Gate Bypass in 9router via Host Header SpoofING

🗓️ 02 Jul 2026 00:00:00Reported by https://gitlab.com/gitlab-org/security-products/gemnasium-dbType 
gitlab
 gitlab🔗 gitlab.com👁 8 Views

Incomplete fix for CVE-2026-46339: Host/Origin gate bypassable proxies; requires CLI token or JWT.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
Circl		CVE-2026-46339
13 May 202613:15
–circl
CVE		CVE-2026-46339
19 May 202619:22
–cve
CVE		CVE-2026-49353
2 Jul 202600:00
–cve
Github Security Blog		9router has an Incomplete Fix: Local-Only Access Gate Bypass in 9router via Host Header SpoofING
2 Jul 202621:13
–github
Github Security Blog		9router: Unauthenticated Remote Code Execution via unprotected MCP custom plugin routes
19 May 202619:22
–github
Github Security Blog		9router's Hardcoded Default fallback JWT Secret Allows Authentication Bypass
2 Jul 202620:56
–github
GitLab Advisory Database		9router: Unauthenticated Remote Code Execution via unprotected MCP custom plugin routes
19 May 202600:00
–gitlab
OSV		GHSA-6G2F-W7G3-77VF 9router has an Incomplete Fix: Local-Only Access Gate Bypass in 9router via Host Header SpoofING
2 Jul 202621:13
–osv
OSV		GHSA-FHH6-4QXV-RPQJ 9router: Unauthenticated Remote Code Execution via unprotected MCP custom plugin routes
19 May 202619:22
–osv
Patchstack		NPM: 9router: Unauthenticated Remote Code Execution via unprotected MCP custom plugin routes
19 May 202619:22
–patchstack
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Vulners
Node
npm9routerRange≤0.4.55

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02 Jul 2026 00:00Current
5.8Medium risk
Vulners AI Score5.8
EPSS0.00147
local gate bypasshost origin headersreverse proxy riskdns rebinding riskmcp stdin injectiontoken based cookielocal access control
8