{"id":"EUVD-2025-210393","revision":"d197bb6379f849989d5706c9faacad1e","records":[{"revision":"d197bb6379f849989d5706c9faacad1e","observedAt":"2026-10-30T01:03:37.669+00:00","statement":{"source":"euvd","id":"EUVD-2025-210393","aliases":["CVE-2025-71381","GHSA-cw3j-28qq-x3xh"],"title":"Hono before 4.10.3 contains a flaw in its CORS middleware: when the origin is not set to \"*\", the middleware copies the Vary header from the incoming request into the response. Because Vary is a response header that should be managed by the…","description":"Hono before 4.10.3 contains a flaw in its CORS middleware: when the origin is not set to \"*\", the middleware copies the Vary header from the incoming request into the response. Because Vary is a response header that should be managed by the server, an attacker can supply arbitrary Vary values that are reflected into the response, potentially causing cache key pollution and inconsistent CORS enforcement in environments that rely on shared caches or proxies.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","score":6.9,"severity":null}],"references":["https://github.com/honojs/hono/security/advisories/GHSA-q7jf-gf43-6x6p","https://www.vulncheck.com/advisories/hono-vary-header-injection-in-cors-middleware"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-210393","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Jun 30, 2026, 10:08:21 PM","dateUpdated":"Oct 29, 2026, 9:15:18 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-2025-210393","identifiers":["EUVD-2025-210393","CVE-2025-71381","GHSA-cw3j-28qq-x3xh"]},"retained":false,"historicalAffected":[]}],"coverage":[]}