Hono CVE-2026-24398
MEDIUM
GHSA-r354-f388-2fhh
CVSS VectorNVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Lifecycle Timeline
3Blast Radius
ecosystem impact- 73 npm packages depend on hono (62 direct, 11 indirect)
Ecosystem-wide dependent count for version 4.11.7.
DescriptionNVD
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.
AnalysisAI
Hono's IP Restriction Middleware fails to properly validate IPv4 octet ranges, allowing attackers to bypass IP-based access controls by submitting malformed addresses with values exceeding 255. This affects all users relying on Hono's IP filtering mechanisms for authentication or authorization. …
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RemediationAI
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Vendor patch is available.
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External POC / Exploit Code
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