{"id":"EUVD-2026-32925","revision":null,"records":[{"revision":"196f4fdd34174de4adf82fc218739e03","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-47675","aliases":[],"title":"Hono: Cookie helper does not sanitize sameSite and priority, allowing Set-Cookie injection","description":"Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.21, the serialize() function in hono/cookie validates domain and path options against characters that corrupt Set-Cookie header syntax (;, \\r, \\n), but does not apply the same validation to sameSite and priority. An application that passes user-controlled input into either option may produce a Set-Cookie response header containing attacker-chosen additional attributes. This vulnerability is fixed in 4.12.21.","state":0,"publishedAt":"2026-05-28T15:28:23.458+00:00","modifiedAt":"2026-05-28T19:17:17.728+00:00","affected":[{"ecosystem":"Vendor product","name":"hono","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"honojs\",\n                    \"product\": \"hono\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 4.12.21\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","score":4.3,"severity":"MEDIUM"}],"references":["https://github.com/honojs/hono/security/advisories/GHSA-3hrh-pfw6-9m5x"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-47675","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-47675","identifiers":["CVE-2026-47675"]},"retained":false,"historicalAffected":[]},{"revision":"3446d62f27334038a326374a7965b3b4","observedAt":"2026-11-09T12:02:51.751+00:00","statement":{"source":"euvd","id":"EUVD-2026-32925","aliases":["CVE-2026-47675","GHSA-3hrh-pfw6-9m5x"],"title":"Hono is a Web application framework that provides support for any JavaScript runtime. 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This vulnerability is fixed in 4.12.21.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","score":4.3,"severity":null}],"references":["https://github.com/honojs/hono/security/advisories/GHSA-3hrh-pfw6-9m5x"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-32925","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"May 28, 2026, 3:28:23 PM","dateUpdated":"May 28, 2026, 7:17:17 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-2026-32925","identifiers":["EUVD-2026-32925","CVE-2026-47675","GHSA-3hrh-pfw6-9m5x"]},"retained":false,"historicalAffected":[]},{"revision":"46cf92617d024012b035c0edfd061d5b","observedAt":"2026-10-25T12:17:26.301+00:00","statement":{"source":"nvd","id":"CVE-2026-47675","aliases":[],"title":"Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.21, the serialize() function in hono/cookie validates domain and path options against characters that corrupt Set-Cookie header syntax (;, \\…","description":"Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.21, the serialize() function in hono/cookie validates domain and path options against characters that corrupt Set-Cookie header syntax (;, \\r, \\n), but does not apply the same validation to sameSite and priority. An application that passes user-controlled input into either option may produce a Set-Cookie response header containing attacker-chosen additional attributes. This vulnerability is fixed in 4.12.21.","state":0,"publishedAt":"2026-05-28T17:16:32.537+00:00","modifiedAt":"2026-10-14T20:10:00.19+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","score":4.3,"severity":"MEDIUM"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","score":5.3,"severity":"MEDIUM"}],"references":["https://github.com/honojs/hono/security/advisories/GHSA-3hrh-pfw6-9m5x"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-47675","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-113","CWE-1287"],"productCriteria":["cpe:2.3:a:hono:hono:*:*:*:*:*:node.js:*:*"],"sourceDates":{"published":"2026-05-28T17:16:32.537","lastModified":"2026-10-14T20:10:00.190"},"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-2026-47675","identifiers":["CVE-2026-47675"]},"retained":false,"historicalAffected":[]},{"revision":"3682bcd8db4b40c98dc807a005d8bafc","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-3hrh-pfw6-9m5x","aliases":["CVE-2026-47675"],"title":"Hono: Cookie helper does not sanitize sameSite and priority, allowing Set-Cookie injection","description":"### Summary\n\nThe `serialize()` function in `hono/cookie` validates `domain` and `path` options against characters that corrupt `Set-Cookie` header syntax (`;`, `\\r`, `\\n`), but does not apply the same validation to `sameSite` and `priority`. An application that passes user-controlled input into either option may produce a `Set-Cookie` response header containing attacker-chosen additional attributes.\n\n### Details\n\nWhen constructing a `Set-Cookie` header value, `serialize()` appends the `sameSite` and `priority` option values directly into the output string after a presentation-only transformation (capitalizing the first character). Although the TypeScript type signature constrains these options to specific string literals, that constraint is not enforced at runtime; any string value, including one containing `;` or line-feed characters, passes through unchanged.\n\nThe validation guard that rejects `;`, `\\r`, and `\\n` from `domain` and `path` is not applied to `sameSite` or `priority`. An application that passes a request-derived value to either option therefore provides an injection point into the header line.\n\nThis issue arises when an application passes user-controlled input to the `sameSite` or `priority` option of `setCookie()` or `serialize()`.\n\n### Impact\n\nAn attacker who can control the `sameSite` or `priority` option value may inject additional attributes into a `Set-Cookie` response header.\n\nThis may lead to:\n\n- Cookie attribute injection — overriding `Domain`, `Path`, `HttpOnly`, `Secure`, or `Max-Age` for the affected cookie\n- HTTP response header injection on runtimes that do not strictly validate header values, enabling a second attacker-controlled `Set-Cookie` header in the same response\n\nThis issue affects applications that pass user-derived input into the `sameSite` or `priority` option of `hono/cookie` serialization functions.","state":0,"publishedAt":"2026-06-04T17:59:25+00:00","modifiedAt":"2026-09-10T03:50:55.2939827+00:00","affected":[{"ecosystem":"npm","name":"hono","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"4.12.21"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/honojs/hono/security/advisories/GHSA-3hrh-pfw6-9m5x","https://nvd.nist.gov/vuln/detail/CVE-2026-47675","https://github.com/honojs/hono/commit/905aedbc20661e0e2fa378783a7ec44a5c3df43d","https://github.com/honojs/hono","https://github.com/honojs/hono/releases/tag/v4.12.21"],"sourceUrl":"https://github.com/advisories/GHSA-3hrh-pfw6-9m5x","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-3hrh-pfw6-9m5x","identifiers":["GHSA-3hrh-pfw6-9m5x","CVE-2026-47675"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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