{"id":"CVE-2016-11065","aliases":["EUVD-2016-2054","GHSA-65w5-wm46-gr88"],"status":"published","title":"An issue was discovered in Mattermost Server before 3.3.0. An attacker could use the WebSocket...","description":"An issue was discovered in Mattermost Server before 3.3.0. An attacker could use the WebSocket feature to send pop-up messages to users or change a post's appearance.","severity":{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00632,"percentile":0.50586,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-732"],"published":"2020-06-19T19:23:02Z","modified":"2026-10-24T10:31:03Z","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-2016-11065"},{"url":"https://github.com/advisories/GHSA-65w5-wm46-gr88"}],"sources":{"cve":[{"id":"CVE-2016-11065","description":"An issue was discovered in Mattermost Server before 3.3.0. An attacker could use the WebSocket feature to send pop-up messages to users or change a post's appearance.","status":"published","published":"2020-06-19T19:23:02Z","modified":"2024-08-06T03:47:34.555Z","updated_at":"2026-11-02T14:33:36.175943Z"}],"euvd":[{"id":"EUVD-2016-2054","description":"An issue was discovered in Mattermost Server before 3.3.0. An attacker could use the WebSocket feature to send pop-up messages to users or change a post's appearance.","status":"published","published":"2020-06-19T19:23:02Z","modified":"2024-08-06T03:47:34Z","updated_at":"2026-11-03T02:22:22.200353Z"}],"ghsa":[{"id":"GHSA-65w5-wm46-gr88","title":"An issue was discovered in Mattermost Server before 3.3.0. An attacker could use the WebSocket...","description":"An issue was discovered in Mattermost Server before 3.3.0. An attacker could use the WebSocket feature to send pop-up messages to users or change a post's appearance.","status":"published","published":"2022-05-24T17:21:00Z","modified":"2023-01-29T05:03:04Z","updated_at":"2026-11-02T14:45:14.198561Z"}],"nvd":[{"id":"CVE-2016-11065","description":"An issue was discovered in Mattermost Server before 3.3.0. An attacker could use the WebSocket feature to send pop-up messages to users or change a post's appearance.","status":"published","published":"2020-06-19T20:15:10.633Z","modified":"2026-06-17T00:40:55.777Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-732"],"updated_at":"2026-11-02T14:03:40.524348Z"}],"osv":[{"id":"CVE-2016-11065","description":"An issue was discovered in Mattermost Server before 3.3.0. An attacker could use the WebSocket feature to send pop-up messages to users or change a post's appearance.","status":"published","published":"2020-06-19T20:15:10.633Z","modified":"2026-10-24T10:31:03.963321591Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:01.531338Z"}]}}