Hono
CVE-2026-24398
MEDIUM
GHSA-r354-f388-2fhh
Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
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- 74 npm packages depend on hono (63 direct, 11 indirect)
Ecosystem-wide dependent count for version 4.11.7.
DescriptionGitHub Advisory
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. A patch is available in version 4.11.7 and later.
Technical ContextAI
Affects 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.
RemediationAI
A vendor patch is available — apply it immediately. Restrict network access to the affected service where possible.
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Hono versions before 4.11.4 allow JWT algorithm confusion attacks through improper algorithm validation in the JWK/JWKS
Hono before version 4.11.4 contains a JWT algorithm confusion vulnerability in its JWK/JWKS verification middleware that
Hono versions prior to 4.12.4 suffer from an authentication bypass in serveStatic when combined with route-based middlew
In Eclipse Hono version 1.3.0 and 1.4.0 the AMQP protocol adapter does not verify the size of AMQP messages received fro
Header injection in Hono's CORS middleware exposes applications to cache key pollution across versions before 4.10.3. Wh
Missing cookie name validation on the write path in Hono's setCookie(), serialize(), and serializeSigned() functions all
Server-side rendering in Hono's JSX module (versions 4.11.8 through before 4.12.27) fails to isolate context values per
Same weakness CWE-185 – Incorrect Regular Expression
View allSame technique Authentication Bypass
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External POC / Exploit Code
Leaving vuln.today