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Vulnerability record · CVE-2026-24398 · published 27 January 2026

CVE-2026-24398: Hono vulnerability

Hono · Hono

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.11.7, IP Restriction Middleware in Hono is vulnerable to an IP address validation bypass. The `IPV4_REGEX` pattern and `convertIPv4ToBinary` function in `src/utils/ipaddr.ts` do not properly validate that IPv4 octet values are within the valid range of 0-255, allowing attackers to craft malformed IP addresses that bypass IP-based access controls. Version 4.11.7 contains a patch for the issue.

6.5 CVSS 3.1 Medium EPSS 0.35% · top 73.9% CWE-185 · CWE-185
6.5CVSS 3.1 base score
0.35%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

Description

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.11.7, IP Restriction Middleware in Hono is vulnerable to an IP address validation bypass. The `IPV4_REGEX` pattern and `convertIPv4ToBinary` function in `src/utils/ipaddr.ts` do not properly validate that IPv4 octet values are within the valid range of 0-255, allowing attackers to craft malformed IP addresses that bypass IP-based access controls. Version 4.11.7 contains a patch for the issue.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/honojs/hono/commit/edbf6eea8e6c26a3937518d4ed91d8666edeec37 Patch
https://github.com/honojs/hono/releases/tag/v4.11.7 Release Notes
https://github.com/honojs/hono/security/advisories/GHSA-r354-f388-2fhh Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2026-29045Hono vulnerabilityHono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.12.4, when using serveStatic together with r…EPSS 0.60%8.1CVE-2025-62610Hono improper authorization vulnerabilityHono is a Web application framework that provides support for any JavaScript runtime. In versions from 1.1.0 to before 4.10.2, Hono’s JWT Auth Middle…EPSS 0.38%7.5CVE-2026-27700Hono authentication bypass by spoofing vulnerabilityHono is a Web application framework that provides support for any JavaScript runtime. In versions 4.12.0 and 4.12.1, when using the AWS Lambda adapte…EPSS 0.34%7.5CVE-2025-58362Hono vulnerabilityHono is a Web application framework that provides support for any JavaScript runtime. Versions 4.8.0 through 4.9.5 contain a flaw in the getPath util…EPSS 0.53%6.5CVE-2026-59896Hono race condition vulnerabilityHono is a Web application framework that provides support for any JavaScript runtime. From 4.11.8 before 4.12.27, hono/jsx did not isolate context va…EPSS 0.30%6.5CVE-2026-47673Hono improper authorization vulnerabilityHono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.21, the jwt and jwk middlewares do not verify tha…EPSS 0.25%6.5CVE-2026-44456Hono uncontrolled resource consumption vulnerabilityHono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.16, bodyLimit() does not reliably enforce maxSize…EPSS 0.28%6.5CVE-2026-29085Hono injection vulnerabilityHono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.12.4, when using streamSSE() in Streaming He…EPSS 0.29%

Source: NIST National Vulnerability Database (record CVE-2026-24398), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.