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.
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Affected Vendors & Products
References
History
Tue, 02 Jun 2026 19:30:00 +0000
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ssvc
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Fri, 29 May 2026 17:00:00 +0000
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Hono
Hono hono |
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| CPEs | cpe:2.3:a:hono:hono:*:*:*:*:*:node.js:*:* | |
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Hono
Hono hono |
Thu, 28 May 2026 17:00:00 +0000
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| Description | 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. | |
| Title | Hono: IP Restriction bypasses static deny rules for non-canonical IPv6 | |
| Weaknesses | CWE-1289 CWE-185 |
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cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-06-02T18:15:02.284Z
Reserved: 2026-05-19T21:10:38.798Z
Link: CVE-2026-47674
Updated: 2026-06-02T18:14:55.067Z
Status : Analyzed
Published: 2026-05-28T17:16:32.383
Modified: 2026-05-29T16:57:58.913
Link: CVE-2026-47674
No data.
OpenCVE Enrichment
Updated: 2026-05-30T21:00:12Z