CVE-2026-24398

MEDIUM

4.8

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.

CVE Details

CVSS v3.1 Score4.8

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Attack VectorNETWORK

ComplexityHIGH

Privileges RequiredNONE

User InteractionNONE

Published1/27/2026

Last Modified2/4/2026

Sourcenvd

Honeypot Sightings0

Affected Products

hono:hono

Weaknesses (CWE)

CWE-185

References

https://github.com/honojs/hono/commit/edbf6eea8e6c26a3937518d4ed91d8666edeec37(security-advisories@github.com)

https://github.com/honojs/hono/releases/tag/v4.11.7(security-advisories@github.com)

https://github.com/honojs/hono/security/advisories/GHSA-r354-f388-2fhh(security-advisories@github.com)

IOC Correlations

No correlations recorded

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