PT-2026-44414 · Honojs · Hono

Published 2026-05-28 · Updated 2026-05-28 · CVE-2026-47674

NVD

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

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.

Fix

Weakness Enumeration

CWE-1289

CWE-185

Related Identifiers

CVE-2026-47674

Affected Products

Hono

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-47674 · Security Note
• https://github.com/honojs/hono/security/advisories/GHSA-xrhx-7g5j-rcj5 · Note