CVE-2026-56682— 9Router: Login Brute-Force Lockout Bypass via Spoofable X-9r-Real-Ip Header
Quick assessment
Affected
decolua 9router
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
9Router is an AI router & token saver. Prior to 0.5.6, 9Router deployments that allow requests to reach Next.js without the sanitizing custom-server.js wrapper use the client-supplied X-9r-Real-Ip value as the bucket key in getClientIp, checkLock, and recordFa
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I. Basic Information for CVE-2026-56682
Vulnerability Information
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Vulnerability Title
9Router: Login Brute-Force Lockout Bypass via Spoofable X-9r-Real-Ip Header
Source: CVE Program / CVE List V5
Vulnerability Description
9Router is an AI router & token saver. Prior to 0.5.6, 9Router deployments that allow requests to reach Next.js without the sanitizing custom-server.js wrapper use the client-supplied X-9r-Real-Ip value as the bucket key in getClientIp, checkLock, and recordFail in src/lib/auth/loginLimiter.js for POST /api/auth/login. A remote unauthenticated attacker can rotate the header on every password guess so each request uses a new failed-attempt bucket and the five-attempt progressive lockout never returns HTTP 429. This permits unthrottled password guessing against the dashboard login and can lead to an administrative session if the password is recovered. This issue is fixed in version 0.5.6.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
过多认证尝试的限制不恰当
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-56682
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-56682 (1)
Other References for CVE-2026-56682 (2)
IV. Related Vulnerabilities
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CVE-2026-56681
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Same vendor: decolua
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CVE-2026-56681
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CVE-2026-72860
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Same weakness: CWE-307
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V. Comments for CVE-2026-56682
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