{"id":"CVE-2019-20884","aliases":["EUVD-2019-11421","GHSA-ch5m-7gjj-425h"],"status":"published","title":"An issue was discovered in Mattermost Server before 5.8.0. It allows attackers to partially...","description":"An issue was discovered in Mattermost Server before 5.8.0. It allows attackers to partially attach a file to more than one post.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00811,"percentile":0.57209,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-732"],"published":"2020-06-19T16:42:05Z","modified":"2026-10-24T10:30:43Z","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-2019-20884"},{"url":"https://github.com/advisories/GHSA-ch5m-7gjj-425h"}],"sources":{"cve":[{"id":"CVE-2019-20884","description":"An issue was discovered in Mattermost Server before 5.8.0. It allows attackers to partially attach a file to more than one post.","status":"published","published":"2020-06-19T16:42:05Z","modified":"2024-08-05T02:53:09.448Z","updated_at":"2026-11-02T14:20:17.11067Z"}],"euvd":[{"id":"EUVD-2019-11421","description":"An issue was discovered in Mattermost Server before 5.8.0. It allows attackers to partially attach a file to more than one post.","status":"published","published":"2020-06-19T16:42:05Z","modified":"2024-08-05T02:53:09Z","updated_at":"2026-11-03T02:40:20.270172Z"}],"ghsa":[{"id":"GHSA-ch5m-7gjj-425h","title":"An issue was discovered in Mattermost Server before 5.8.0. It allows attackers to partially...","description":"An issue was discovered in Mattermost Server before 5.8.0. It allows attackers to partially attach a file to more than one post.","status":"published","published":"2022-05-24T17:21:14Z","modified":"2023-01-29T05:03:07Z","cwes":["CWE-732"],"updated_at":"2026-11-02T14:45:14.655741Z"}],"nvd":[{"id":"CVE-2019-20884","description":"An issue was discovered in Mattermost Server before 5.8.0. It allows attackers to partially attach a file to more than one post.","status":"published","published":"2020-06-19T17:15:13.707Z","modified":"2026-06-17T02:31:22.69Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:05:47.558959Z"}],"osv":[{"id":"CVE-2019-20884","description":"An issue was discovered in Mattermost Server before 5.8.0. It allows attackers to partially attach a file to more than one post.","status":"published","published":"2020-06-19T17:15:13.707Z","modified":"2026-10-24T10:30:43.308345039Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:12.363788Z"}]}}