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CVE-2026-24398

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-24398

Severity

4.8

Medium

CVSS V3

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Summary

Hono's IPv4 address validation bypass in IP Restriction Middleware allows IP spoofing

Description

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.11.7, IP Restriction Middleware in Hono is vulnerable to an IP address validation bypass. The IPV4_REGEX pattern and convertIPv4ToBinary function in src/utils/ipaddr.ts do not properly validate that IPv4 octet values are within the valid range of 0-255, allowing attackers to craft malformed IP addresses that bypass IP-based access controls. Version 4.11.7 contains a patch for the issue.

Affected packages

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