CVE-2026-47674

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.21, the ip-restriction middleware (hono/ip-restriction) compares incoming IP addresses against configured deny and allow rules using string equality after partial normalization. Non-canonical IPv6 representations of an address already listed in a static rule — such as compressed forms, explicit-zero forms, or hex-notation IPv4-mapped addresses — do not match the normalized rule entry, causing the rule to be silently skipped. This vulnerability is fixed in 4.12.21.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/honojs/hono/security/advisories/GHSA-xrhx-7g5j-rcj5	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:hono:hono:*:*:*:*:*:node.js:*:*

History

14 Oct 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) Hono es un framework de aplicación web que proporciona soporte para cualquier entorno de ejecución de JavaScript. Anteriormente a la 4.12.21, el middleware de restricción de IP (hono/ip-restriction) compara las direcciones IP entrantes con las reglas de denegación y permiso configuradas utilizando la igualdad de cadenas después de una normalización parcial. Representaciones IPv6 no canónicas de una dirección ya listada en una regla estática - como formas comprimidas, formas de ceros explícitos o direcciones mapeadas a IPv4 en notación hexadecimal - no coinciden con la entrada de regla normalizada, lo que provoca que la regla se omita silenciosamente. Esta vulnerabilidad se corrigió en la 4.12.21.

Information

Published : 2026-05-28 17:16

Updated : 2026-10-14 20:10

NVD link : CVE-2026-47674

Mitre link : CVE-2026-47674

CVE.ORG link : CVE-2026-47674

JSON object : View

Products Affected

hono

hono

CWE

CWE-185

Incorrect Regular Expression

CWE-1289

Improper Validation of Unsafe Equivalence in Input

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