{"id":"CVE-2020-4020","aliases":["EUVD-2020-25285","GHSA-72w5-xxp4-hp3g"],"status":"published","title":"The file downloading functionality in the Atlassian Companion App before version 1.0.0 allows...","description":"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.","severity":{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01669,"percentile":0.76942,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2020-06-01T06:35:33Z","modified":"2026-06-17T03:19:26Z","products":[{"vendor":"atlassian","product":"companion"},{"vendor":"atlassian","product":"companion app"}],"references":[{"url":"https://jira.atlassian.com/browse/CONFSERVER-59733","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-4020"},{"url":"https://github.com/advisories/GHSA-72w5-xxp4-hp3g"}],"sources":{"cve":[{"id":"CVE-2020-4020","description":"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.","status":"published","published":"2020-06-01T06:35:33.411Z","modified":"2024-09-16T17:29:09.909Z","updated_at":"2026-11-02T14:35:55.460269Z"}],"euvd":[{"id":"EUVD-2020-25285","description":"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.","status":"published","published":"2020-06-01T06:35:33Z","modified":"2024-09-16T17:29:09Z","updated_at":"2026-11-03T00:55:41.41816Z"}],"ghsa":[{"id":"GHSA-72w5-xxp4-hp3g","title":"The file downloading functionality in the Atlassian Companion App before version 1.0.0 allows...","description":"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.","status":"published","published":"2022-05-24T17:18:56Z","modified":"2023-01-29T05:02:39Z","updated_at":"2026-11-02T14:45:08.540426Z"}],"nvd":[{"id":"CVE-2020-4020","description":"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.","status":"published","published":"2020-06-01T07:15:11.063Z","modified":"2026-06-17T03:19:26.12Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:04.922138Z"}]}}