CVE-2026-24398 (GCVE-0-2026-24398)

Vulnerability from cvelistv5 – Published: 2026-01-27 19:06 – Updated: 2026-01-27 19:20
VLAI?
Title
Hono's IPv4 address validation bypass in IP Restriction Middleware allows IP spoofing
Summary
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.
Severity ?
4.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE
  • CWE-185 - Incorrect Regular Expression
Assigner
References
Impacted products
Vendor Product Version
honojs hono Affected: < 4.11.7
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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