{"api_version":"1","generated_at":"2026-07-23T11:43:18+00:00","cve":"CVE-2020-7661","urls":{"html":"https://cve.report/CVE-2020-7661","api":"https://cve.report/api/cve/CVE-2020-7661.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2020-7661","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-7661"},"summary":{"title":"CVE-2020-7661","description":"all versions of url-regex are vulnerable to Regular Expression Denial of Service. An attacker providing a very long string in String.test can cause a Denial of Service.","state":"PUBLIC","assigner":"report@snyk.io","published_at":"2020-06-04 18:15:00","updated_at":"2020-06-10 15:26:00"},"problem_types":["CWE-400"],"metrics":[],"references":[{"url":"https://github.com/kevva/url-regex/issues/70","name":"https://github.com/kevva/url-regex/issues/70","refsource":"MISC","tags":["Exploit","Third Party Advisory"],"title":"[VULNERABILITY] Parsing a long String will result in 100% CPU usage and `String.test` will never finish · Issue #70 · kevva/url-regex · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://snyk.io/vuln/SNYK-JS-URLREGEX-569472","name":"https://snyk.io/vuln/SNYK-JS-URLREGEX-569472","refsource":"MISC","tags":["Exploit","Third Party Advisory"],"title":"Regular Expression Denial of Service (ReDoS) in url-regex | Snyk","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-7661","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-7661","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2020","cve_id":"7661","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"url-regex_project","cpe5":"url-regex","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"7661","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"url-regex_project","cpe5":"url-regex","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2020-7661","qid":"980768","title":"Nodejs (npm) Security Update for url-regex (GHSA-v4rh-8p82-6h5w)"}]},"source_records":{"cve_program":{"data_type":"CVE","data_format":"MITRE","data_version":"4.0","CVE_data_meta":{"ID":"CVE-2020-7661","ASSIGNER":"report@snyk.io","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"vendor_name":"n/a","product":{"product_data":[{"product_name":"url-regex","version":{"version_data":[{"version_value":"all versions"}]}}]}}]}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Regular Expression Denial of Service"}]}]},"references":{"reference_data":[{"refsource":"MISC","name":"https://github.com/kevva/url-regex/issues/70","url":"https://github.com/kevva/url-regex/issues/70"},{"refsource":"MISC","name":"https://snyk.io/vuln/SNYK-JS-URLREGEX-569472","url":"https://snyk.io/vuln/SNYK-JS-URLREGEX-569472"}]},"description":{"description_data":[{"lang":"eng","value":"all versions of url-regex are vulnerable to Regular Expression Denial of Service. An attacker providing a very long string in String.test can cause a Denial of Service."}]}},"nvd":{"publishedDate":"2020-06-04 18:15:00","lastModifiedDate":"2020-06-10 15:26:00","problem_types":["CWE-400"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:C","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"COMPLETE","baseScore":7.8},"severity":"HIGH","exploitabilityScore":10,"impactScore":6.9,"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:url-regex_project:url-regex:*:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2020","CveId":"7661","Ordinal":"167942","Title":"CVE-2020-7661","CVE":"CVE-2020-7661","Year":"2020"},"notes":[{"CveYear":"2020","CveId":"7661","Ordinal":"1","NoteData":"all versions of url-regex are vulnerable to Regular Expression Denial of Service. An attacker providing a very long string in String.test can cause a Denial of Service.","Type":"Description","Title":null},{"CveYear":"2020","CveId":"7661","Ordinal":"2","NoteData":"2020-06-04","Type":"Other","Title":"Published"},{"CveYear":"2020","CveId":"7661","Ordinal":"3","NoteData":"2020-06-04","Type":"Other","Title":"Modified"}]}}}