{"api_version":"1","generated_at":"2026-07-24T00:18:50+00:00","cve":"CVE-2021-27516","urls":{"html":"https://cve.report/CVE-2021-27516","api":"https://cve.report/api/cve/CVE-2021-27516.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-27516","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-27516"},"summary":{"title":"CVE-2021-27516","description":"URI.js (aka urijs) before 1.19.6 mishandles certain uses of backslash such as http:\\/ and interprets the URI as a relative path.","state":"PUBLIC","assigner":"cve@mitre.org","published_at":"2021-02-22 00:15:00","updated_at":"2022-11-29 15:01:00"},"problem_types":["NVD-CWE-noinfo"],"metrics":[],"references":[{"url":"https://advisory.checkmarx.net/advisory/CX-2021-4305","name":"https://advisory.checkmarx.net/advisory/CX-2021-4305","refsource":"MISC","tags":[],"title":"","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/medialize/URI.js/commit/a1ad8bcbc39a4d136d7e252e76e957f3ece70839","name":"https://github.com/medialize/URI.js/commit/a1ad8bcbc39a4d136d7e252e76e957f3ece70839","refsource":"MISC","tags":["Patch","Third Party Advisory"],"title":"fix(parse): treat backslash as forwardslash in scheme delimiter · medialize/URI.js@a1ad8bc · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/medialize/URI.js/releases/tag/v1.19.6","name":"https://github.com/medialize/URI.js/releases/tag/v1.19.6","refsource":"MISC","tags":["Third Party Advisory"],"title":"Release 1.19.6 (February 13th 2021) · medialize/URI.js · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-27516","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27516","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"27516","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"uri.js_project","cpe5":"uri.js","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"27516","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"urijs_project","cpe5":"urijs","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"node.js","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"27516","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"urijs_project","cpe5":"urijs","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"node.js","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2021-27516","qid":"982825","title":"Nodejs (npm) Security Update for urijs (GHSA-p6j9-7xhc-rhwp)"}]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2021-27516","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"URI.js (aka urijs) before 1.19.6 mishandles certain uses of backslash such as http:\\/ and interprets the URI as a relative path."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"url":"https://github.com/medialize/URI.js/commit/a1ad8bcbc39a4d136d7e252e76e957f3ece70839","refsource":"MISC","name":"https://github.com/medialize/URI.js/commit/a1ad8bcbc39a4d136d7e252e76e957f3ece70839"},{"url":"https://github.com/medialize/URI.js/releases/tag/v1.19.6","refsource":"MISC","name":"https://github.com/medialize/URI.js/releases/tag/v1.19.6"},{"refsource":"MISC","name":"https://advisory.checkmarx.net/advisory/CX-2021-4305","url":"https://advisory.checkmarx.net/advisory/CX-2021-4305"}]}},"nvd":{"publishedDate":"2021-02-22 00:15:00","lastModifiedDate":"2022-11-29 15:01:00","problem_types":["NVD-CWE-noinfo"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:N/A:N","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"NONE","availabilityImpact":"NONE","baseScore":5},"severity":"MEDIUM","exploitabilityScore":10,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:uri.js_project:uri.js:*:*:*:*:*:*:*:*","versionEndExcluding":"1.19.6","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"27516","Ordinal":"202623","Title":"CVE-2021-27516","CVE":"CVE-2021-27516","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"27516","Ordinal":"1","NoteData":"URI.js (aka urijs) before 1.19.6 mishandles certain uses of backslash such as http:\\/ and interprets the URI as a relative path.","Type":"Description","Title":null},{"CveYear":"2021","CveId":"27516","Ordinal":"2","NoteData":"2021-02-21","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"27516","Ordinal":"3","NoteData":"2021-03-30","Type":"Other","Title":"Modified"}]}}}