CVE-2026-55638— 9router: Unauthenticated LLM proxy access via /codex rewrite authorization bypass
Possible ATT&CK Techniques 2AI
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I. Basic Information for CVE-2026-55638
Vulnerability Information
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Vulnerability Title
9router: Unauthenticated LLM proxy access via /codex rewrite authorization bypass
Source: NVD (National Vulnerability Database)
Vulnerability Description
9Router is an AI router & token saver. Prior to 0.5.2, 9router protects /v1, /v1beta, /api/v1, and /api/v1beta in src/dashboardGuard.js but omits /codex before next.config.mjs rewrites /codex/* to /api/v1/responses. A remote unauthenticated attacker can send requests to /codex/* to bypass the API-key gate and cause the server to make upstream provider calls using operator-stored LLM provider credentials. This issue is fixed in version 0.5.2.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制缺失
Source: NVD (National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-55638
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCVerified env Premium
Qwen3.6-35B-A3B · 8280 chars
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III. Intelligence Information for CVE-2026-55638
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Patches & Fixes for CVE-2026-55638 (1)
Vendor Advisories for CVE-2026-55638 (1)
Other References for CVE-2026-55638 (1)
Same Patch Batch · decolua · 2026-07-10 · 6 CVEs total
| CVE-2026-55500 | 9.9 CRITICAL | 9router: Exposure of Sensitive Information and Unprotected Database Import/Export Allows C |
| CVE-2026-56675 | 8.3 HIGH | 9router: Reverse proxy locality collapse allows unauthenticated access to 9router /v1 APIs |
| CVE-2026-55641 | 8.2 HIGH | 9router: Unauthenticated `/v1` proxy access via `Host`-header spoofing → open AI relay + S |
| CVE-2026-56676 | 7.4 HIGH | 9router: Image prefetch DNS rebinding allows SSRF to internal services |
| CVE-2026-55501 | 7.3 HIGH | 9router: Login brute-force protection bypass via spoofed X-Forwarded-For header |
IV. Related Vulnerabilities
Same product: 9router
- CVE-2026-56675
9router: Reverse proxy locality collapse allows unauthentica - CVE-2026-55641
9router: Unauthenticated `/v1` proxy access via `Host`-heade - CVE-2026-56676
9router: Image prefetch DNS rebinding allows SSRF to interna - CVE-2026-55500
9router: Exposure of Sensitive Information and Unprotected D - CVE-2026-55501
9router: Login brute-force protection bypass via spoofed X-F
Same vendor: decolua
- CVE-2026-56675
9router: Reverse proxy locality collapse allows unauthentica - CVE-2026-55641
9router: Unauthenticated `/v1` proxy access via `Host`-heade - CVE-2026-56676
9router: Image prefetch DNS rebinding allows SSRF to interna - CVE-2026-55500
9router: Exposure of Sensitive Information and Unprotected D - CVE-2026-55501
9router: Login brute-force protection bypass via spoofed X-F
Same weakness: CWE-862
- CVE-2026-10628
Points and Rewards for WooCommerce <= 2.10.1 - Missing Autho - CVE-2026-8678
MyParcel <= 4.25.1 - Missing Authorization to Authenticated - CVE-2026-58590
FlowDrop - Moderately critical - Access bypass - SA-CONTRIB- - CVE-2026-58589
FlowDrop - Moderately critical - Access bypass - SA-CONTRIB- - CVE-2026-13241
Paragraphs - Moderately critical - Access bypass - SA-CONTRI
V. Comments for CVE-2026-55638
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