{"affected":[{"affectedData":[{"product":"proxygen","vendor":"Facebook","versions":[{"lessThan":"v2020.05.18.00","status":"affected","version":"unspecified","versionType":"custom"},{"lessThan":"unspecified","status":"unaffected","version":"v2020.05.18.00","versionType":"custom"}]}],"source":"cve-assign@fb.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:facebook:proxygen:*:*:*:*:*:*:*:*","matchCriteriaId":"9973A048-EE22-4BF6-9930-E58B51EBF463","versionEndExcluding":"2020.05.18.00","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","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."},{"lang":"es","value":"Un uso de la memoria previamente liberada es posible debido a un error en la administración perpetua en el adaptador de petición cuando un cliente malicioso invoca el manejo de errores de petición en una secuencia específica. Este problema afecta a las versiones de proxygen anteriores a v2020.05.18.00."}],"id":"CVE-2020-1897","lastModified":"2026-06-17T03:02:34.550","metrics":{"cvssMetricV2":[{"acInsufInfo":true,"baseSeverity":"HIGH","cvssData":{"accessComplexity":"LOW","accessVector":"NETWORK","authentication":"NONE","availabilityImpact":"PARTIAL","baseScore":7.5,"confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P","version":"2.0"},"exploitabilityScore":10.0,"impactScore":6.4,"obtainAllPrivilege":false,"obtainOtherPrivilege":false,"obtainUserPrivilege":false,"source":"nvd@nist.gov","type":"Primary","userInteractionRequired":false}],"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"exploitabilityScore":3.9,"impactScore":5.9,"source":"nvd@nist.gov","type":"Primary"}]},"published":"2020-05-18T22:15:13.000","references":[{"source":"cve-assign@fb.com","tags":["Vendor Advisory"],"url":"https://www.facebook.com/security/advisories/cve-2020-1897"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"],"url":"https://www.facebook.com/security/advisories/cve-2020-1897"}],"sourceIdentifier":"cve-assign@fb.com","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"CWE-416"}],"source":"nvd@nist.gov","type":"Primary"}]}