{"id":"CVE-2026-47675","sourceIdentifier":"security-advisories@github.com","published":"2026-05-28T17:16:32.537","lastModified":"2026-10-14T20:10:00.190","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"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."},{"lang":"es","value":"Hono es un framework de aplicación web que proporciona soporte para cualquier tiempo de ejecución de JavaScript. Anteriormente a la 4.12.21, la función serialize() en hono/cookie valida las opciones de dominio y ruta contra caracteres que corrompen la sintaxis del encabezado Set-Cookie (;, \\r, \\n), pero no aplica la misma validación a sameSite y priority. Una aplicación que pasa entrada controlada por el usuario a cualquiera de las opciones puede producir un encabezado de respuesta Set-Cookie que contiene atributos adicionales elegidos por el atacante. Esta vulnerabilidad se corrige en la 4.12.21."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"honojs","product":"hono","versions":[{"version":"< 4.12.21","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","baseScore":4.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":1.4},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":1.4}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-05-28T19:16:42.834142Z","id":"CVE-2026-47675","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-113"},{"lang":"en","value":"CWE-1287"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:hono:hono:*:*:*:*:*:node.js:*:*","versionEndExcluding":"4.12.21","matchCriteriaId":"797B2A25-4B24-46A9-8EF4-35F6F1214A7C"}]}]}],"references":[{"url":"https://github.com/honojs/hono/security/advisories/GHSA-3hrh-pfw6-9m5x","source":"security-advisories@github.com","tags":["Vendor Advisory"]}]}