{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-09-23T08:39:45.580","vulnerabilities":[{"cve":{"id":"CVE-2021-22964","sourceIdentifier":"support@hackerone.com","published":"2021-10-14T15:15:08.933","lastModified":"2026-06-17T03:38:07.180","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"A redirect vulnerability in the `fastify-static` module version >= 4.2.4 and < 4.4.1 allows remote attackers to redirect Mozilla Firefox users to arbitrary websites via a double slash `//` followed by a domain: `http://localhost:3000//a//youtube.com/%2e%2e%2f%2e%2e`.A DOS vulnerability is possible if the URL contains invalid characters `curl --path-as-is \"http://localhost:3000//^/..\"`The issue shows up on all the `fastify-static` applications that set `redirect: true` option. By default, it is `false`."},{"lang":"es","value":"Una vulnerabilidad de redirección en el módulo \"fastify-static\" versiones posteriores a 4.2.4 incluyéndola, y anteriores a 4.4.1, permite a atacantes remotos redirigir a usuarios de Mozilla Firefox a sitios web arbitrarios por medio de una doble barra \"//\" seguida de un dominio: \"http://localhost:3000//a//youtube.com/%2e%2e%2f%2e%2e\". Es posible una vulnerabilidad de DOS si la URL contiene caracteres no válidos \"curl --path-as-is \"http://localhost:3000//^/..\" El problema se presenta en todas las aplicaciones \"fastify-static\" que establecen la opción \"redirect: true\". Por defecto, es \"false\""}],"affected":[{"source":"support@hackerone.com","affectedData":[{"vendor":"n/a","product":"https://github.com/fastify/fastify-static","versions":[{"version":"Affected >= v4.2.4, Fixed v4.4.1","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:H","baseScore":8.8,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":5.3}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:P/I:P/A:P","baseScore":6.8,"accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":8.6,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":true}]},"weaknesses":[{"source":"support@hackerone.com","type":"Secondary","description":[{"lang":"en","value":"CWE-400"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-601"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:fastify:fastify-static:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2.4","versionEndExcluding":"4.4.1","matchCriteriaId":"B6CDA693-9FBB-492F-A8A7-80BDFB1434F5"}]}]}],"references":[{"url":"https://hackerone.com/reports/1361804","source":"support@hackerone.com","tags":["Exploit","Issue Tracking","Patch","Third Party Advisory"]},{"url":"https://hackerone.com/reports/1361804","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Issue Tracking","Patch","Third Party Advisory"]}]}}]}