Description

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.

INFO

Published Date :

2026-04-08T14:43:36.476Z

Last Modified :

2026-04-08T16:13:05.175Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-39409 vulnerability.

No data.

REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-39409.

URL Resource
https://github.com/honojs/hono/commit/48fa2233bc092f650119f42df043050737cabf39 cve-icon cve-icon
https://github.com/honojs/hono/releases/tag/v4.12.12 cve-icon cve-icon
https://github.com/honojs/hono/security/advisories/GHSA-xpcf-pg52-r92g cve-icon cve-icon
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