{"id":"CVE-2016-11063","aliases":["GHSA-cffj-7w5c-jqjh","GO-2025-4045"],"url":"https://o3.security/vulnerability/CVE-2016-11063","summary":"Mattermost Server vulnerable to Cross-site Scripting through file preview feature","details":"An issue was discovered in Mattermost Server before 3.5.1. XSS can occur via file preview.","published":"2020-06-19T20:15:10.493Z","modified":"2026-10-24T10:30:50.884303886Z","cvss":{"score":6.1,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server","fixedVersion":"3.5.1"}],"fix":{"url":"https://github.com/mattermost/mattermost/commit/48533aa483879a19fdd2c1e09c596aa6c028d439","label":"mattermost/mattermost@48533aa"},"references":[{"type":"ADVISORY","url":"https://mattermost.com/security-updates/"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2016-11063"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/48533aa483879a19fdd2c1e09c596aa6c028d439"},{"type":"WEB","url":"https://github.com/mattermost/mattermost"},{"type":"WEB","url":"https://mattermost.com/security-updates"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-24T10:30:50.884303886Z"}}