{"id":"CVE-2019-20851","aliases":["EUVD-2019-11388","GHSA-hjj4-ch7m-p53m"],"status":"published","title":"An issue was discovered in Mattermost Mobile Apps before 1.26.0. An attacker can use directory...","description":"An issue was discovered in Mattermost Mobile Apps before 1.26.0. An attacker can use directory traversal with the Video Preview feature to overwrite arbitrary files on a device.","severity":{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01385,"percentile":0.72394,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-22"],"published":"2020-06-19T14:02:54Z","modified":"2026-06-17T02:31:19Z","products":[{"vendor":"mattermost","product":"mattermost"}],"references":[{"url":"https://mattermost.com/security-updates/","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-20851"},{"url":"https://github.com/advisories/GHSA-hjj4-ch7m-p53m"}],"sources":{"cve":[{"id":"CVE-2019-20851","description":"An issue was discovered in Mattermost Mobile Apps before 1.26.0. An attacker can use directory traversal with the Video Preview feature to overwrite arbitrary files on a device.","status":"published","published":"2020-06-19T14:02:54Z","modified":"2024-08-05T02:53:09.404Z","updated_at":"2026-11-02T14:20:17.11067Z"}],"euvd":[{"id":"EUVD-2019-11388","description":"An issue was discovered in Mattermost Mobile Apps before 1.26.0. An attacker can use directory traversal with the Video Preview feature to overwrite arbitrary files on a device.","status":"published","published":"2020-06-19T14:02:54Z","modified":"2024-08-05T02:53:09Z","updated_at":"2026-11-03T02:40:20.270172Z"}],"ghsa":[{"id":"GHSA-hjj4-ch7m-p53m","title":"An issue was discovered in Mattermost Mobile Apps before 1.26.0. An attacker can use directory...","description":"An issue was discovered in Mattermost Mobile Apps before 1.26.0. An attacker can use directory traversal with the Video Preview feature to overwrite arbitrary files on a device.","status":"published","published":"2022-05-24T17:21:11Z","modified":"2023-01-29T05:03:05Z","cwes":["CWE-22"],"updated_at":"2026-11-02T14:45:14.198561Z"}],"nvd":[{"id":"CVE-2019-20851","description":"An issue was discovered in Mattermost Mobile Apps before 1.26.0. An attacker can use directory traversal with the Video Preview feature to overwrite arbitrary files on a device.","status":"published","published":"2020-06-19T15:15:10.163Z","modified":"2026-06-17T02:31:19.057Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":6.4,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:05:47.558959Z"}]}}