{"id":"CVE-2017-18874","details":"An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2 when local storage for files is used. A System Admin can achieve directory traversal.","aliases":["GHSA-8qg8-c7mw-6fj7","GO-2025-4148"],"modified":"2026-08-03T02:12:58.640509062Z","published":"2020-06-19T19:15:09.950Z","related":["SUSE-SU-2026:0037-1","openSUSE-SU-2026:21483-1"],"references":[{"type":"ADVISORY","url":"https://mattermost.com/security-updates/"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mattermost/mattermost-server","events":[{"introduced":"0"},{"fixed":"61d6a7434b18612c52d0d6b7565032065262e096"},{"introduced":"a5ce36d0882ae1b4b409a7b68233bf89591a5f95"},{"fixed":"c0aafbcdc221970054869b6c03db77c1dcc63289"}]}],"versions":["v4.2.0","v4.2.0-rc4"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2017-18874.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N"}]}