{"api_version":"1","generated_at":"2026-04-22T23:08:54+00:00","cve":"CVE-2020-1897","urls":{"html":"https://cve.report/CVE-2020-1897","api":"https://cve.report/api/cve/CVE-2020-1897.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2020-1897","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-1897"},"summary":{"title":"CVE-2020-1897","description":"A use-after-free is possible due to an error in lifetime management in the request adaptor when a malicious client invokes request error handling in a specific sequence. This issue affects versions of proxygen prior to v2020.05.18.00.","state":"PUBLIC","assigner":"cve-assign@fb.com","published_at":"2020-05-18 22:15:00","updated_at":"2020-05-19 20:28:00"},"problem_types":["CWE-416"],"metrics":[],"references":[{"url":"https://www.facebook.com/security/advisories/cve-2020-1897","name":"https://www.facebook.com/security/advisories/cve-2020-1897","refsource":"CONFIRM","tags":["Vendor Advisory"],"title":"Facebook","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-1897","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-1897","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2020","cve_id":"1897","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"facebook","cpe5":"proxygen","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"1897","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"facebook","cpe5":"proxygen","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"cve-assign@fb.com","DATE_ASSIGNED":"2020-05-18","ID":"CVE-2020-1897","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"vendor_name":"Facebook","product":{"product_data":[{"product_name":"proxygen","version":{"version_data":[{"version_affected":"<","version_value":"v2020.05.18.00"},{"version_affected":"!>=","version_value":"v2020.05.18.00"}]}}]}}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"A use-after-free is possible due to an error in lifetime management in the request adaptor when a malicious client invokes request error handling in a specific sequence. This issue affects versions of proxygen prior to v2020.05.18.00."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Use-after-free (CWE-ID 416)"}]}]},"references":{"reference_data":[{"refsource":"CONFIRM","name":"https://www.facebook.com/security/advisories/cve-2020-1897","url":"https://www.facebook.com/security/advisories/cve-2020-1897"}]}},"nvd":{"publishedDate":"2020-05-18 22:15:00","lastModifiedDate":"2020-05-19 20:28:00","problem_types":["CWE-416"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL"},"exploitabilityScore":3.9,"impactScore":5.9},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL","baseScore":7.5},"severity":"HIGH","exploitabilityScore":10,"impactScore":6.4,"acInsufInfo":true,"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:facebook:proxygen:*:*:*:*:*:*:*:*","versionEndExcluding":"2020.05.18.00","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2020","CveId":"1897","Ordinal":"161279","Title":"CVE-2020-1897","CVE":"CVE-2020-1897","Year":"2020"},"notes":[{"CveYear":"2020","CveId":"1897","Ordinal":"1","NoteData":"A use-after-free is possible due to an error in lifetime management in the request adaptor when a malicious client invokes request error handling in a specific sequence. This issue affects versions of proxygen prior to v2020.05.18.00.","Type":"Description","Title":null},{"CveYear":"2020","CveId":"1897","Ordinal":"2","NoteData":"2020-05-18","Type":"Other","Title":"Published"},{"CveYear":"2020","CveId":"1897","Ordinal":"3","NoteData":"2020-05-18","Type":"Other","Title":"Modified"}]}}}