{"affected":[{"affectedData":[{"product":"Companion App","vendor":"Atlassian","versions":[{"lessThan":"1.0.0","status":"affected","version":"unspecified","versionType":"custom"}]}],"source":"security@atlassian.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:atlassian:companion:*:*:*:*:*:*:*:*","matchCriteriaId":"0633F948-1149-4BD9-864E-DCA8E182DA76","versionEndExcluding":"1.0.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"The file downloading functionality in the Atlassian Companion App before version 1.0.0 allows remote attackers, who control a Confluence Server instance that the Companion App is connected to, execute arbitrary .exe files via a Protection Mechanism Failure."},{"lang":"es","value":"La funcionalidad file downloading en la Atlassian Companion App versiones anteriores a 1.0.0, permite a atacantes remotos, que controlan una instancia de Confluence Server a la que está conectada la Companion App, ejecutar archivos .exe arbitrarios por medio de un Fallo del Mecanismo de Protección."}],"id":"CVE-2020-4020","lastModified":"2026-06-17T03:19:26.120","metrics":{"cvssMetricV2":[{"acInsufInfo":false,"baseSeverity":"MEDIUM","cvssData":{"accessComplexity":"LOW","accessVector":"NETWORK","authentication":"SINGLE","availabilityImpact":"PARTIAL","baseScore":6.5,"confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","vectorString":"AV:N/AC:L/Au:S/C:P/I:P/A:P","version":"2.0"},"exploitabilityScore":8.0,"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":7.2,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"exploitabilityScore":1.2,"impactScore":5.9,"source":"nvd@nist.gov","type":"Primary"}]},"published":"2020-06-01T07:15:11.063","references":[{"source":"security@atlassian.com","tags":["Vendor Advisory"],"url":"https://jira.atlassian.com/browse/CONFSERVER-59733"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"],"url":"https://jira.atlassian.com/browse/CONFSERVER-59733"}],"sourceIdentifier":"security@atlassian.com","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"NVD-CWE-Other"}],"source":"nvd@nist.gov","type":"Primary"}]}