{"api_version":"1","generated_at":"2026-07-24T19:57:31+00:00","cve":"CVE-2020-9861","urls":{"html":"https://cve.report/CVE-2020-9861","api":"https://cve.report/api/cve/CVE-2020-9861.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2020-9861","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-9861"},"summary":{"title":"CVE-2020-9861","description":"A stack overflow issue existed in Swift for Linux. The issue was addressed with improved input validation for dealing with deeply nested malicious JSON input.","state":"PUBLIC","assigner":"product-security@apple.com","published_at":"2020-11-02 23:15:00","updated_at":"2021-07-21 11:39:00"},"problem_types":["CWE-674"],"metrics":[],"references":[{"url":"https://forums.swift.org/t/swift-5-1-5-for-linux-jsonserialization-limit-recursion-when-parsing/34514","name":"https://forums.swift.org/t/swift-5-1-5-for-linux-jsonserialization-limit-recursion-when-parsing/34514","refsource":"MISC","tags":["Vendor Advisory"],"title":"Swift 5.1.5 for Linux: JSONSerialization: Limit recursion when parsing - Security Updates - Swift Forums","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-9861","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-9861","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2020","cve_id":"9861","vulnerable":"1","versionEndIncluding":"5.1.4","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"apple","cpe5":"swift","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"ubuntu","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"data_type":"CVE","data_format":"MITRE","data_version":"4.0","CVE_data_meta":{"ID":"CVE-2020-9861","ASSIGNER":"product-security@apple.com","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"vendor_name":"Swift","product":{"product_data":[{"product_name":"Swift 5.1.5 for Linux","version":{"version_data":[{"version_affected":"<","version_value":"Swift 5.1.5 for Linux"}]}}]}}]}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Parsing malicious JSON input containing deeply nested \"array\" or \"object\" structures may lead to a Denial of Service"}]}]},"references":{"reference_data":[{"url":"https://forums.swift.org/t/swift-5-1-5-for-linux-jsonserialization-limit-recursion-when-parsing/34514","refsource":"MISC","name":"https://forums.swift.org/t/swift-5-1-5-for-linux-jsonserialization-limit-recursion-when-parsing/34514"}]},"description":{"description_data":[{"lang":"eng","value":"A stack overflow issue existed in Swift for Linux. The issue was addressed with improved input validation for dealing with deeply nested malicious JSON input."}]}},"nvd":{"publishedDate":"2020-11-02 23:15:00","lastModifiedDate":"2021-07-21 11:39:00","problem_types":["CWE-674"],"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:P","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL","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:apple:swift:*:*:*:*:*:ubuntu:*:*","versionEndIncluding":"5.1.4","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2020","CveId":"9861","Ordinal":"170257","Title":"CVE-2020-9861","CVE":"CVE-2020-9861","Year":"2020"},"notes":[{"CveYear":"2020","CveId":"9861","Ordinal":"1","NoteData":"A stack overflow issue existed in Swift for Linux. The issue was addressed with improved input validation for dealing with deeply nested malicious JSON input.","Type":"Description","Title":null},{"CveYear":"2020","CveId":"9861","Ordinal":"2","NoteData":"2020-11-02","Type":"Other","Title":"Published"},{"CveYear":"2020","CveId":"9861","Ordinal":"3","NoteData":"2020-11-02","Type":"Other","Title":"Modified"}]}}}