CVE-2026-39409
MEDIUM SEVERITYVulnerability 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.
Vulnerability Details
Published Date
Last Modified
CWE ID
CWE-180
Source
GitHub
Vendor
npm
Product
hono
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