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CVE-2026-49353— 9Router: Local-Only Access Gate Bypass in 9router via Host Header SpoofING

Quick assessment

Affected
decolua 9router
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

decolua 9Router是decolua基金会的一个智能路由与降级的AI模型代理工具。 decolua 9router 0.4.45及之前版本存在授权问题漏洞，该漏洞源于src/dashboardGuard.js本地访问网关使用Host和Origin标头进行身份验证，允许在反向代理或隧道部署中标头伪造，从而到达MCP子进程stdin路径。

CVSS 7.5 · High EPSS 0.36% · P28

Possible ATT&CK Techniques 1 AI

T1133 · External Remote Services

Affected Version Matrix 1

VendorProduct Version RangeStatus
decolua 9router <= 0.4.45 affected
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I. Basic Information for CVE-2026-49353

Vulnerability Information
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Vulnerability Title
9Router: Local-Only Access Gate Bypass in 9router via Host Header SpoofING
Source: CVE Program / CVE List V5
Vulnerability Description
9Router is an AI router & token saver. In 0.4.45 and earlier, 9Router's src/dashboardGuard.js local-only access gate used Host and Origin headers in isLocalRequest() to protect /api/mcp/*, /api/tunnel/*, and /api/cli-tools/*, allowing header spoofing in reverse proxy or tunnel deployments to reach MCP child process stdin paths.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用欺骗进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
decolua 9router 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
decolua 9Router是decolua基金会的一个智能路由与降级的AI模型代理工具。 decolua 9router 0.4.45及之前版本存在授权问题漏洞，该漏洞源于src/dashboardGuard.js本地访问网关使用Host和Origin标头进行身份验证，允许在反向代理或隧道部署中标头伪造，从而到达MCP子进程stdin路径。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
decolua 9router <= 0.4.45 -

II. Public POCs for CVE-2026-49353

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8641 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-49353

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Patches & Fixes for CVE-2026-49353 (2)

Vendor Advisories for CVE-2026-49353 (1)

Vendor Pages for CVE-2026-49353 (1)

Same Patch Batch · decolua · 2026-07-15 · 6 CVEs total

CVE-2026-46339 10.0 CRITICAL 9Router: Unauthenticated Remote Code Execution via unprotected MCP custom plugin routes
CVE-2026-49352 9.8 CRITICAL 9Router: Hardcoded Default fallback JWT Secret Allows Authentication Bypass
CVE-2026-62312 8.8 HIGH 9Router: Authenticated RCE via Unvalidated MCP Plugin Arguments
CVE-2026-56678 6.4 MEDIUM 9Router: Kiro region injection allows authenticated SSRF with Authorization header forward
CVE-2026-56679 9Router: Mass assignment in PATCH /api/settings allows authenticated authorization downgra

IV. Related Vulnerabilities

Same product: 9router
Same vendor: decolua
Same weakness: CWE-290

V. Comments for CVE-2026-49353

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