> CVE-2026-56682 [MEDIUM]

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PUBLISHED
2026-09-22 17:17
MODIFIED
2026-09-22 17:17
CVSS_SCORE V3
5.3
EPSS (Prob. Exploit)
0.47%
Top 60.8%
DATA SOURCES:
NVD đź”— 2026-09-22 CWE MITRE đź”— 2026-10-01 FIRST EPSS đź”— 2026-10-21 GITHUB đź”— 2026-09-24 OSV đź”— 2026-10-19

> 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.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EXPLOITABILITY
3.9
IMPACT
1.4

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
Low (L)
Divulgation limitée d'informations
I (Impact Intégrité)
Integrity Impact
None (N)
Aucune modification de données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
Low
Divulgation limitée d'informations
Intégrité
None
Aucune modification de données possible
Disponibilité
None
Aucune interruption de service

> WEAKNESSES

CWE-307 CWE-807

> CWE DETAILED DESCRIPTIONS

CWE-307: Improper Restriction of Excessive Authentication Attempts - The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame. | CWE-807: Reliance on Untrusted Inputs in a Security Decision - The product uses a protection mechanism that relies on the existence or values of an input, but the input can be modified by an untrusted actor in a way that bypasses the protection mechanism.

> GITHUB SECURITY ADVISORY

GHSA-32gc-64m7-hj7v MODERATE

9Router has a Login Brute-Force Lockout Bypass via Spoofable X-9r-Real-Ip Header

AFFECTED PACKAGES:
NPM / 9router
<= 0.5.4
Fixed in: 0.5.8

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

9Router: Login Brute-Force Lockout Bypass via Spoofable X-9r-Real-Ip Header

AFFECTED PACKAGES:
Unknown / Unknown
67 versions affected
ALIASES:
GHSA-32gc-64m7-hj7v

> HISTORIQUE DES MODIFICATIONS

Première apparition
22/09/2026 17:17
Source: NVD
📊 ENRICHISSEMENT 01/10/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-307: Improper Restriction of Excessive Authentication Attempts - The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame. | ...
Total des modifications: 1 Dernière mise à jour: 3 weeks ago

> REFERENCES

https://github.com/decolua/9router/commit/efd20be8d81ef2e256a7037f3aa78e6b567b5f...
https://github.com/decolua/9router/releases/tag/v0.5.6
https://github.com/decolua/9router/security/advisories/GHSA-32gc-64m7-hj7v
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