{"id":"CVE-2019-20855","aliases":["EUVD-2019-11392","GHSA-ggg2-74c2-pvrh"],"status":"published","title":"An issue was discovered in Mattermost Server before 5.16.1, 5.15.2, 5.14.5, and 5.9.6. It allows...","description":"An issue was discovered in Mattermost Server before 5.16.1, 5.15.2, 5.14.5, and 5.9.6. It allows attackers to obtain sensitive information (local files) during legacy attachment migration.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01163,"percentile":0.67462,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-200"],"published":"2020-06-19T14:06:36Z","modified":"2026-10-24T10:30:52Z","products":[{"vendor":"mattermost","product":"mattermost_server"}],"references":[{"url":"https://mattermost.com/security-updates/","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-20855"},{"url":"https://github.com/advisories/GHSA-ggg2-74c2-pvrh"}],"sources":{"cve":[{"id":"CVE-2019-20855","description":"An issue was discovered in Mattermost Server before 5.16.1, 5.15.2, 5.14.5, and 5.9.6. It allows attackers to obtain sensitive information (local files) during legacy attachment migration.","status":"published","published":"2020-06-19T14:06:36Z","modified":"2024-08-05T02:53:09.392Z","updated_at":"2026-11-02T14:20:17.431882Z"}],"euvd":[{"id":"EUVD-2019-11392","description":"An issue was discovered in Mattermost Server before 5.16.1, 5.15.2, 5.14.5, and 5.9.6. It allows attackers to obtain sensitive information (local files) during legacy attachment migration.","status":"published","published":"2020-06-19T14:06:36Z","modified":"2024-08-05T02:53:09Z","updated_at":"2026-11-03T02:40:20.270172Z"}],"ghsa":[{"id":"GHSA-ggg2-74c2-pvrh","title":"An issue was discovered in Mattermost Server before 5.16.1, 5.15.2, 5.14.5, and 5.9.6. It allows...","description":"An issue was discovered in Mattermost Server before 5.16.1, 5.15.2, 5.14.5, and 5.9.6. It allows attackers to obtain sensitive information (local files) during legacy attachment migration.","status":"published","published":"2022-05-24T17:21:11Z","modified":"2023-01-29T05:03:05Z","cwes":["CWE-200"],"updated_at":"2026-11-02T14:45:14.198561Z"}],"nvd":[{"id":"CVE-2019-20855","description":"An issue was discovered in Mattermost Server before 5.16.1, 5.15.2, 5.14.5, and 5.9.6. It allows attackers to obtain sensitive information (local files) during legacy attachment migration.","status":"published","published":"2020-06-19T15:15:10.43Z","modified":"2026-06-17T02:31:19.49Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:05:47.558959Z"}],"osv":[{"id":"CVE-2019-20855","description":"An issue was discovered in Mattermost Server before 5.16.1, 5.15.2, 5.14.5, and 5.9.6. It allows attackers to obtain sensitive information (local files) during legacy attachment migration.","status":"published","published":"2020-06-19T15:15:10.43Z","modified":"2026-10-24T10:30:52.146793079Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:12.010761Z"}]}}