{"id":"CVE-2025-71381","revision":"d226ba1a32eb4ddc9a9d2db7a1901f0a","records":[{"revision":"d226ba1a32eb4ddc9a9d2db7a1901f0a","observedAt":"2026-10-25T04:17:18.34+00:00","statement":{"source":"nvd","id":"CVE-2025-71381","aliases":[],"title":"Hono before 4.10.2 (fixed in 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…","description":"Hono before 4.10.2 (fixed in 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":"2026-06-30T23:16:52.027+00:00","modifiedAt":"2026-10-12T21:10:00.227+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · disclosure@vulncheck.com · Secondary","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":6.9,"severity":"MEDIUM"},{"system":"CVSS 3.1 · disclosure@vulncheck.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","score":6.5,"severity":"MEDIUM"}],"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://nvd.nist.gov/vuln/detail/CVE-2025-71381","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-113"],"productCriteria":[],"sourceDates":{"published":"2026-06-30T23:16:52.027","lastModified":"2026-10-12T21:10:00.227"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2025-71381","identifiers":["CVE-2025-71381"]},"retained":false,"historicalAffected":[]}],"coverage":[]}