5.3

CVE-2026-47674

Hono: IP Restriction bypasses static deny rules for non-canonical IPv6

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Hono ≫ Hono SwPlatformnode.js Version < 4.12.21
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.24% 0.153
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 5.3 3.9 1.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE-1289 Improper Validation of Unsafe Equivalence in Input

The product receives an input value that is used as a resource identifier or other type of reference, but it does not validate or incorrectly validates that the input is equivalent to a potentially-unsafe value.

CWE-185 Incorrect Regular Expression

The product specifies a regular expression in a way that causes data to be improperly matched or compared.

https://github.com/honojs/hono/security/advisories/GHSA-xrhx-7g5j-rcj5
Vendor Advisory