{"id":"CVE-2017-18899","aliases":["EUVD-2017-9989","GHSA-2mmx-5mfh-2536"],"status":"published","title":"An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5. It mishandles IP...","description":"An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5. It mishandles IP-based rate limiting.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01096,"percentile":0.65826,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-770"],"published":"2020-06-19T18:42:06Z","modified":"2026-10-24T10:30:34Z","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-2017-18899"},{"url":"https://github.com/advisories/GHSA-2mmx-5mfh-2536"}],"sources":{"cve":[{"id":"CVE-2017-18899","description":"An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5. It mishandles IP-based rate limiting.","status":"published","published":"2020-06-19T18:42:06Z","modified":"2024-08-05T21:37:44.359Z","updated_at":"2026-11-02T14:33:22.064284Z"}],"euvd":[{"id":"EUVD-2017-9989","description":"An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5. It mishandles IP-based rate limiting.","status":"published","published":"2020-06-19T18:42:06Z","modified":"2024-08-05T21:37:44Z","updated_at":"2026-11-03T02:23:04.612289Z"}],"ghsa":[{"id":"GHSA-2mmx-5mfh-2536","title":"An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5. It mishandles IP...","description":"An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5. It mishandles IP-based rate limiting.","status":"published","published":"2022-05-24T17:21:05Z","modified":"2023-01-29T05:03:04Z","updated_at":"2026-11-02T14:45:14.198561Z"}],"nvd":[{"id":"CVE-2017-18899","description":"An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5. It mishandles IP-based rate limiting.","status":"published","published":"2020-06-19T19:15:11.437Z","modified":"2026-06-17T01:13:47.66Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-770"],"updated_at":"2026-11-02T14:04:21.160774Z"}],"osv":[{"id":"CVE-2017-18899","description":"An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5. It mishandles IP-based rate limiting.","status":"published","published":"2020-06-19T19:15:11.437Z","modified":"2026-10-24T10:30:34.52961337Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T15:44:05.486486Z"}]}}