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CVE-2026-39409
Published: Apr 8, 2026
Modified: Apr 8, 2026
PUBLISHED
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.
| Vendor | Product | Versions |
|---|---|---|
honojs | hono | affected < 4.12.12 |
Weaknesses (CWE)
References
https://github.com/honojs/hono/security/advisories/GHSA-xpcf-pg52-r92g
x_refsource_CONFIRM
https://github.com/honojs/hono/releases/tag/v4.12.12
x_refsource_MISC
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