{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-24398","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-01-22T18:19:49.172Z","datePublished":"2026-01-27T19:06:42.792Z","dateUpdated":"2026-01-27T19:20:35.594Z"},"containers":{"cna":{"title":"Hono's IPv4 address validation bypass in IP Restriction Middleware allows IP spoofing","problemTypes":[{"descriptions":[{"cweId":"CWE-185","lang":"en","description":"CWE-185: Incorrect Regular Expression","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.8,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/honojs/hono/security/advisories/GHSA-r354-f388-2fhh","tags":["x_refsource_CONFIRM"],"url":"https://github.com/honojs/hono/security/advisories/GHSA-r354-f388-2fhh"},{"name":"https://github.com/honojs/hono/commit/edbf6eea8e6c26a3937518d4ed91d8666edeec37","tags":["x_refsource_MISC"],"url":"https://github.com/honojs/hono/commit/edbf6eea8e6c26a3937518d4ed91d8666edeec37"},{"name":"https://github.com/honojs/hono/releases/tag/v4.11.7","tags":["x_refsource_MISC"],"url":"https://github.com/honojs/hono/releases/tag/v4.11.7"}],"affected":[{"vendor":"honojs","product":"hono","versions":[{"version":"< 4.11.7","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-01-27T19:06:42.792Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-r354-f388-2fhh","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-01-27T19:18:50.922446Z","id":"CVE-2026-24398","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-01-27T19:20:35.594Z"}}]}}