{"id":"CVE-2020-14456","aliases":["EUVD-2020-6594","GHSA-w8pp-vvm7-4qqr"],"status":"published","title":"An issue was discovered in Mattermost Desktop App before 4.4.0. The Same Origin Policy is...","description":"An issue was discovered in Mattermost Desktop App before 4.4.0. The Same Origin Policy is mishandled during access-control decisions for web APIs, aka MMSA-2020-0006.","severity":{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00425,"percentile":0.37096,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-346"],"published":"2020-06-19T13:12:30Z","modified":"2026-10-24T10:30:47Z","products":[{"vendor":"mattermost","product":"mattermost_desktop"}],"references":[{"url":"https://mattermost.com/security-updates/","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-14456"},{"url":"https://github.com/advisories/GHSA-w8pp-vvm7-4qqr"}],"sources":{"cve":[{"id":"CVE-2020-14456","description":"An issue was discovered in Mattermost Desktop App before 4.4.0. The Same Origin Policy is mishandled during access-control decisions for web APIs, aka MMSA-2020-0006.","status":"published","published":"2020-06-19T13:12:30Z","modified":"2024-08-04T12:46:34.475Z","updated_at":"2026-11-02T14:35:46.476719Z"}],"euvd":[{"id":"EUVD-2020-6594","description":"An issue was discovered in Mattermost Desktop App before 4.4.0. The Same Origin Policy is mishandled during access-control decisions for web APIs, aka MMSA-2020-0006.","status":"published","published":"2020-06-19T13:12:30Z","modified":"2024-08-04T12:46:34Z","updated_at":"2026-11-03T03:07:34.099541Z"}],"ghsa":[{"id":"GHSA-w8pp-vvm7-4qqr","title":"An issue was discovered in Mattermost Desktop App before 4.4.0. The Same Origin Policy is...","description":"An issue was discovered in Mattermost Desktop App before 4.4.0. The Same Origin Policy is mishandled during access-control decisions for web APIs, aka MMSA-2020-0006.","status":"published","published":"2022-05-24T17:21:17Z","modified":"2023-01-29T05:03:07Z","updated_at":"2026-11-02T14:45:14.655741Z"}],"nvd":[{"id":"CVE-2020-14456","description":"An issue was discovered in Mattermost Desktop App before 4.4.0. The Same Origin Policy is mishandled during access-control decisions for web APIs, aka MMSA-2020-0006.","status":"published","published":"2020-06-19T14:15:11.777Z","modified":"2026-06-17T02:54:48.58Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-346"],"updated_at":"2026-11-02T14:06:07.249892Z"}],"osv":[{"id":"CVE-2020-14456","description":"An issue was discovered in Mattermost Desktop App before 4.4.0. The Same Origin Policy is mishandled during access-control decisions for web APIs, aka MMSA-2020-0006.","status":"published","published":"2020-06-19T14:15:11.777Z","modified":"2026-10-24T10:30:47.27807242Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high"}],"updated_at":"2026-11-02T15:44:14.418339Z"}]}}