{"id":"EUVD-2026-42325","revision":"b0de6d3aeaf04b289ffd435fcb0e463e","records":[{"revision":"b0de6d3aeaf04b289ffd435fcb0e463e","observedAt":"2026-11-01T11:24:57.299+00:00","statement":{"source":"euvd","id":"EUVD-2026-42325","aliases":["CVE-2026-59897","GHSA-xgm2-5f3f-mvvc"],"title":"Hono is a Web application framework that provides support for any JavaScript runtime. From 4.3.3 before 4.12.27, the AWS API Gateway v1 adapter can drop a distinct repeated request header value because it de-duplicates values using a substr…","description":"Hono is a Web application framework that provides support for any JavaScript runtime. From 4.3.3 before 4.12.27, the AWS API Gateway v1 adapter can drop a distinct repeated request header value because it de-duplicates values using a substring comparison instead of an exact match, so middleware or application logic that depends on the complete X-Forwarded-For chain, rate limiting, audit logging, or proxy-chain validation can receive incomplete data. This issue is fixed in version 4.12.27.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","score":4.8,"severity":null}],"references":["https://github.com/honojs/hono/security/advisories/GHSA-xgm2-5f3f-mvvc","https://github.com/honojs/hono/commit/aa921770d09bc35970362d5a2630a878f6d982fd","https://github.com/honojs/hono/releases/tag/v4.12.27"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-42325","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Jul 8, 2026, 4:06:11 PM","dateUpdated":"Jul 9, 2026, 1:51:31 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-42325","identifiers":["EUVD-2026-42325","CVE-2026-59897","GHSA-xgm2-5f3f-mvvc"]},"retained":false,"historicalAffected":[]}],"coverage":[]}