{"id":"CVE-2023-3593","aliases":["BIT-mattermost-2023-3593","EUVD-2023-44243","GHSA-mf63-58j7-3j76"],"status":"published","title":"Server crash via a specially crafted markdown input","description":"Mattermost fails to properly validate markdown, allowing an attacker to crash the server via a specially crafted markdown input.","severity":{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00608,"percentile":0.49371,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400"],"published":"2023-07-17T15:38:57Z","modified":"2026-10-28T02:31:02Z","fixes":[{"ecosystem":"Bitnami","package":"mattermost","fixed_in":["7.8.7","7.9.5","7.10.3"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"mattermost","ranges":[{"type":"SEMVER","events":[{"introduced":"7.8.0"},{"fixed":"7.8.7"},{"introduced":"7.9.0"},{"fixed":"7.9.5"},{"introduced":"7.10.0"},{"fixed":"7.10.3"}]}]}],"products":[{"vendor":"mattermost","product":"mattermost"},{"vendor":"mattermost","product":"mattermost_server"}],"references":[{"url":"https://mattermost.com/security-updates","tags":["x_transferred","Vendor Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-3593","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-mf63-58j7-3j76"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/3xxx/CVE-2023-3593.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2023-3593","title":"Server crash via a specially crafted markdown input","description":"Mattermost fails to properly validate markdown, allowing an attacker to crash the server via a specially crafted markdown input.\n\n","status":"published","published":"2023-07-17T15:38:57.759Z","modified":"2024-10-21T19:40:56.331Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:35:24.707957Z"}],"euvd":[{"id":"EUVD-2023-44243","description":"Mattermost fails to properly validate markdown, allowing an attacker to crash the server via a specially crafted markdown input.\n\n","status":"published","published":"2023-07-17T15:38:57Z","modified":"2024-10-21T19:40:56Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-03T00:05:23.140259Z"}],"ghsa":[{"id":"GHSA-mf63-58j7-3j76","title":"Mattermost fails to properly validate markdown, allowing an attacker to crash the server via a...","description":"Mattermost fails to properly validate markdown, allowing an attacker to crash the server via a specially crafted markdown input.\n\n","status":"published","published":"2023-07-17T18:31:28Z","modified":"2024-04-04T06:10:57Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:56:39.852376Z"}],"nvd":[{"id":"CVE-2023-3593","description":"Mattermost fails to properly validate markdown, allowing an attacker to crash the server via a specially crafted markdown input.\n\n","status":"published","published":"2023-07-17T16:15:11.037Z","modified":"2026-06-17T06:14:25.47Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:08:17.044696Z"}],"osv":[{"id":"CVE-2023-3593","title":"Server crash via a specially crafted markdown input","description":"Mattermost fails to properly validate markdown, allowing an attacker to crash the server via a specially crafted markdown input.\n\n","status":"published","published":"2023-07-17T15:38:57.759Z","modified":"2026-10-28T02:31:02.066898653Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:44:32.510144Z"},{"id":"BIT-mattermost-2023-3593","description":"Mattermost fails to properly validate markdown, allowing an attacker to crash the server via a specially crafted markdown input.","status":"published","published":"2024-03-06T10:59:47.39Z","modified":"2025-04-03T14:40:37.652Z","updated_at":"2026-11-02T15:28:33.072289Z"}]}}