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CVE-2026-56675— 9router: Reverse proxy locality collapse allows unauthenticated access to 9router /v1 APIs

CVSS 8.3 · High EPSS 0.32% · P24

Affected Version Matrix 1

VendorProductVersion RangeStatus
decolua9router< 0.5.2affected
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I. Basic Information for CVE-2026-56675

Vulnerability Information
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Vulnerability Title
9router: Reverse proxy locality collapse allows unauthenticated access to 9router /v1 APIs
Source: CVE Program / CVE List V5
Vulnerability Description
9Router is an AI router & token saver. Prior to 0.5.2, 9router treats loopback requests as trusted and allows /v1/* access without an API key, so a same-host reverse proxy that forwards public traffic to the backend through 127.0.0.1 causes src/dashboardGuard.js to misclassify external requests as local. A remote unauthenticated attacker can access /v1 APIs such as /v1/models and may abuse configured upstream provider credentials through /v1 proxy endpoints depending on enabled providers. This issue is fixed in version 0.5.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
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 0.5.2之前版本存在安全漏洞，该漏洞源于将环回请求视为可信并且允许无需API密钥访问/v1/*接口，可能导致远程未经身份验证的攻击者访问/v1 API并滥用配置的上游提供程序凭据。
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

VendorProductAffected VersionsCPESubscribe
decolua9router < 0.5.2 -

II. Public POCs for CVE-2026-56675

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
Qwen3.6-35B-A3B · 8633 chars
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III. Intelligence Information for CVE-2026-56675

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Patches & Fixes for CVE-2026-56675 (1)

Vendor Advisories for CVE-2026-56675 (1)

Other References for CVE-2026-56675 (1)

Same Patch Batch · decolua · 2026-07-10 · 6 CVEs total

CVE-2026-555009.9 CRITICAL9router: Exposure of Sensitive Information and Unprotected Database Import/Export Allows C
CVE-2026-556388.6 HIGH9router: Unauthenticated LLM proxy access via /codex rewrite authorization bypass
CVE-2026-556418.2 HIGH9router: Unauthenticated `/v1` proxy access via `Host`-header spoofing → open AI relay + S
CVE-2026-566767.4 HIGH9router: Image prefetch DNS rebinding allows SSRF to internal services
CVE-2026-555017.3 HIGH9router: Login brute-force protection bypass via spoofed X-Forwarded-For header

IV. Related Vulnerabilities

Same product: 9router
Same vendor: decolua
Same weakness: CWE-287

V. Comments for CVE-2026-56675

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