{"id":"CVE-2020-14458","aliases":["BIT-mattermost-2020-14458","EUVD-2020-6595","GHSA-8jgx-6gx2-jgqm"],"status":"published","title":"An issue was discovered in Mattermost Server before 5.19.0. Attackers can discover private...","description":"An issue was discovered in Mattermost Server before 5.19.0. Attackers can discover private channels via the \"get channel by name\" API, aka MMSA-2020-0004.","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":0.01143,"percentile":0.66933,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-200"],"published":"2020-06-19T13:14:22Z","modified":"2026-10-24T10:30:43Z","fixes":[{"ecosystem":"Bitnami","package":"mattermost","fixed_in":["5.19.0"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"mattermost","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"5.19.0"}]}]}],"products":[{"vendor":"mattermost","product":"mattermost_server"}],"references":[{"url":"https://mattermost.com/security-updates/","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","web","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-14458","tags":["web"]},{"url":"https://github.com/advisories/GHSA-8jgx-6gx2-jgqm"}],"sources":{"cve":[{"id":"CVE-2020-14458","description":"An issue was discovered in Mattermost Server before 5.19.0. Attackers can discover private channels via the \"get channel by name\" API, aka MMSA-2020-0004.","status":"published","published":"2020-06-19T13:14:22Z","modified":"2024-08-04T12:46:34.547Z","updated_at":"2026-11-02T14:35:46.476719Z"}],"euvd":[{"id":"EUVD-2020-6595","description":"An issue was discovered in Mattermost Server before 5.19.0. Attackers can discover private channels via the \"get channel by name\" API, aka MMSA-2020-0004.","status":"published","published":"2020-06-19T13:14:22Z","modified":"2024-08-04T12:46:34Z","updated_at":"2026-11-03T03:07:34.099541Z"}],"ghsa":[{"id":"GHSA-8jgx-6gx2-jgqm","title":"An issue was discovered in Mattermost Server before 5.19.0. Attackers can discover private...","description":"An issue was discovered in Mattermost Server before 5.19.0. Attackers can discover private channels via the \"get channel by name\" API, aka MMSA-2020-0004.","status":"published","published":"2022-05-24T17:21:17Z","modified":"2023-01-29T05:02:57Z","cwes":["CWE-200"],"updated_at":"2026-11-02T14:45:12.832224Z"}],"nvd":[{"id":"CVE-2020-14458","description":"An issue was discovered in Mattermost Server before 5.19.0. Attackers can discover private channels via the \"get channel by name\" API, aka MMSA-2020-0004.","status":"published","published":"2020-06-19T14:15:11.917Z","modified":"2026-06-17T02:54:48.797Z","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":"2026-11-02T14:06:07.249892Z"}],"osv":[{"id":"CVE-2020-14458","description":"An issue was discovered in Mattermost Server before 5.19.0. Attackers can discover private channels via the \"get channel by name\" API, aka MMSA-2020-0004.","status":"published","published":"2020-06-19T14:15:11.917Z","modified":"2026-10-24T10:30:43.659409176Z","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":"2026-11-02T15:44:14.418339Z"},{"id":"BIT-mattermost-2020-14458","description":"An issue was discovered in Mattermost Server before 5.19.0. Attackers can discover private channels via the \"get channel by name\" API, aka MMSA-2020-0004.","status":"published","published":"2024-03-06T11:05:39.773Z","modified":"2025-04-03T14:40:37.652Z","updated_at":"2026-11-02T15:28:33.072289Z"}]}}