{"api_version":"1","generated_at":"2026-05-13T02:29:48+00:00","cve":"CVE-2021-22964","urls":{"html":"https://cve.report/CVE-2021-22964","api":"https://cve.report/api/cve/CVE-2021-22964.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-22964","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-22964"},"summary":{"title":"CVE-2021-22964","description":"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`.","state":"PUBLIC","assigner":"support@hackerone.com","published_at":"2021-10-14 15:15:00","updated_at":"2021-10-20 18:02:00"},"problem_types":["CWE-601"],"metrics":[],"references":[{"url":"https://hackerone.com/reports/1361804","name":"https://hackerone.com/reports/1361804","refsource":"MISC","tags":[],"title":"HackerOne","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-22964","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-22964","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"22964","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"fastify","cpe5":"fastify-static","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2021-22964","qid":"980374","title":"Nodejs (npm) Security Update for fastify-static (GHSA-pgh6-m65r-2rhq)"}]},"source_records":{"cve_program":{"data_type":"CVE","data_format":"MITRE","data_version":"4.0","CVE_data_meta":{"ID":"CVE-2021-22964","ASSIGNER":"support@hackerone.com","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"vendor_name":"n/a","product":{"product_data":[{"product_name":"https://github.com/fastify/fastify-static","version":{"version_data":[{"version_value":"Affected >= v4.2.4, Fixed v4.4.1"}]}}]}}]}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Denial of Service (CWE-400)"}]}]},"references":{"reference_data":[{"refsource":"MISC","name":"https://hackerone.com/reports/1361804","url":"https://hackerone.com/reports/1361804"}]},"description":{"description_data":[{"lang":"eng","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`."}]}},"nvd":{"publishedDate":"2021-10-14 15:15:00","lastModifiedDate":"2021-10-20 18:02:00","problem_types":["CWE-601"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH"},"exploitabilityScore":2.8,"impactScore":5.3},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:P/I:P/A:P","accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL","baseScore":6.8},"severity":"MEDIUM","exploitabilityScore":8.6,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":true}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:fastify:fastify-static:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2.4","versionEndExcluding":"4.4.1","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"22964","Ordinal":"197697","Title":"CVE-2021-22964","CVE":"CVE-2021-22964","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"22964","Ordinal":"1","NoteData":"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`.","Type":"Description","Title":null},{"CveYear":"2021","CveId":"22964","Ordinal":"2","NoteData":"2021-10-14","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"22964","Ordinal":"3","NoteData":"2021-10-14","Type":"Other","Title":"Modified"}]}}}