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CVE-2026-39409

Estado: AnalizadaMedia (6.3)—

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.12, ipRestriction() does not canonicalize IPv4-mapped IPv6 client addresses (e.g. ::ffff:127.0.0.1) before applying IPv4 allow or deny rules. In environments such as Node.js dual-stack, this can cause IPv4 rules to fail to match, leading to unintended authorization behavior. This vulnerability is fixed in 4.12.12.

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).

Tecnologías afectadas (1)

Hono — Hono

CWE

Referencias

JSON original (NVD)

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          "role": "CISA Coordinator",
          "options": [
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          "version": "2.0.3",
          "timestamp": "2026-04-08T16:08:52.269915Z"
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "integrityImpact": "NONE",
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          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
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    "cvssMetricV40": [
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        "type": "Secondary",
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        "cvssData": {
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          "Recovery": "NOT_DEFINED",
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          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "valueDensity": "NOT_DEFINED",
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          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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  "published": "2026-04-08T15:16:14.990",
  "references": [
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      "url": "https://github.com/honojs/hono/commit/48fa2233bc092f650119f42df043050737cabf39",
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "value": "Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.12, ipRestriction() does not canonicalize IPv4-mapped IPv6 client addresses (e.g. ::ffff:127.0.0.1) before applying IPv4 allow or deny rules. In environments such as Node.js dual-stack, this can cause IPv4 rules to fail to match, leading to unintended authorization behavior. This vulnerability is fixed in 4.12.12."
    },
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      "value": "Hono es un framework de aplicación web que proporciona soporte para cualquier entorno de ejecución de JavaScript. Antes de la versión 4.12.12, ipRestriction() no canoniza las direcciones de cliente IPv6 mapeadas a IPv4 (p. ej., ::ffff:127.0.0.1) antes de aplicar las reglas de permiso o denegación de IPv4. En entornos como Node.js de doble pila, esto puede hacer que las reglas IPv4 no coincidan, lo que lleva a un comportamiento de autorización no deseado. Esta vulnerabilidad se corrige en la versión 4.12.12."
    }
  ],
  "lastModified": "2026-07-24T21:10:00.143",
  "configurations": [
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