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CVE-2026-27981

Estado: AnalizadaAlta (7.4)—

HomeBox is a home inventory and organization system. Prior to 0.24.0, the authentication rate limiter (authRateLimiter) tracks failed attempts per client IP. It determines the client IP by reading, 1. X-Real-IP header, 2. First entry of X-Forwarded-For header, and 3. r.RemoteAddr (TCP connection address). These headers were read unconditionally. An attacker connecting directly to Homebox could forge any value in X-Real-IP, effectively getting a fresh rate limit identity per request.

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There is a TrustProxy option in the configuration (Options.TrustProxy, default false), but this option was never read by any middleware or rate limiter code. Additionally, chi's middleware.RealIP was applied unconditionally in main.go, overwriting r.RemoteAddr with the forged header value before it reaches any handler. This vulnerability is fixed in 0.24.0.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

AV:N sin privilegios permite eludir rate limiter forjando X-Real-IP para ataques de fuerza bruta contra autenticación remota, ganando acceso a credenciales válidas.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Password PoliciesMulti-factor AuthenticationVulnerability ScanningUser Account ManagementPrivileged Account ManagementNetwork Segmentation

Tecnologías afectadas (1)

Sysadminsmedia — Homebox

CWE

Referencias

JSON original (NVD)

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          "role": "CISA Coordinator",
          "options": [
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      "value": "HomeBox is a home inventory and organization system. Prior to 0.24.0, the authentication rate limiter (authRateLimiter) tracks failed attempts per client IP. It determines the client IP by reading, 1. X-Real-IP header, 2. First entry of X-Forwarded-For header, and 3. r.RemoteAddr (TCP connection address). These headers were read unconditionally. An attacker connecting directly to Homebox could forge any value in X-Real-IP, effectively getting a fresh rate limit identity per request. There is a TrustProxy option in the configuration (Options.TrustProxy, default false), but this option was never read by any middleware or rate limiter code. Additionally, chi's middleware.RealIP was applied unconditionally in main.go, overwriting r.RemoteAddr with the forged header value before it reaches any handler. This vulnerability is fixed in 0.24.0."
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      "value": "HomeBox es un sistema de inventario y organización del hogar. Antes de 0.24.0, el limitador de tasa de autenticación (authRateLimiter) rastrea los intentos fallidos por IP de cliente. Determina la IP del cliente leyendo: 1. el encabezado X-Real-IP, 2. la primera entrada del encabezado X-Forwarded-For, y 3. r.RemoteAddr (dirección de conexión TCP). Estos encabezados se leían incondicionalmente. Un atacante conectándose directamente a Homebox podría falsificar cualquier valor en X-Real-IP, obteniendo efectivamente una nueva identidad de límite de tasa por solicitud. Existe una opción TrustProxy en la configuración (Options.TrustProxy, por defecto falso), pero esta opción nunca fue leída por ningún middleware o código del limitador de tasa. Además, el middleware.RealIP de chi se aplicaba incondicionalmente en main.go, sobrescribiendo r.RemoteAddr con el valor del encabezado falsificado antes de que llegara a cualquier gestor. Esta vulnerabilidad está corregida en 0.24.0."
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  "lastModified": "2026-06-17T10:28:00.820",
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