{"id":"CVE-2024-2446","aliases":["BIT-mattermost-2024-2446","EUVD-2024-27396","GHSA-x6jw-w885-qwpc"],"status":"published","title":"Mattermost versions 8.1.x before 8.1.10, 9.2.x before 9.2.6, 9.3.x before 9.3.2, and 9.4.x before...","description":"Mattermost versions 8.1.x before 8.1.10, 9.2.x before 9.2.6, 9.3.x before 9.3.2, and 9.4.x before 9.4.3 fail to limit the number of @-mentions processed per message, allowing an authenticated attacker to crash the client applications of other users via large, crafted messages.","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":0.00446,"percentile":0.39039,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400","CWE-770"],"published":"2024-03-15T09:11:21Z","modified":"2026-11-07T02:46:35Z","fixes":[{"ecosystem":"Bitnami","package":"mattermost","fixed_in":["8.1.10","9.2.6","9.3.2","9.4.3"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"mattermost","ranges":[{"type":"SEMVER","events":[{"introduced":"8.1.0"},{"fixed":"8.1.10"},{"introduced":"9.2.0"},{"fixed":"9.2.6"},{"introduced":"9.3.0"},{"fixed":"9.3.2"},{"introduced":"9.4.0"},{"fixed":"9.4.3"}]}]}],"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-2024-2446","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-x6jw-w885-qwpc"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/2xxx/CVE-2024-2446.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2024-2446","description":"Mattermost versions 8.1.x before 8.1.10, 9.2.x before 9.2.6, 9.3.x before 9.3.2, and 9.4.x before 9.4.3 fail to limit the number of @-mentions processed per message, allowing an authenticated attacker to crash the client applications of other users via large, crafted messages.\n\n","status":"published","published":"2024-03-15T09:11:21.446Z","modified":"2024-08-01T19:11:53.477Z","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":"2026-11-02T14:34:09.897248Z"}],"euvd":[{"id":"EUVD-2024-27396","description":"Mattermost versions 8.1.x before 8.1.10, 9.2.x before 9.2.6, 9.3.x before 9.3.2, and 9.4.x before 9.4.3 fail to limit the number of @-mentions processed per message, allowing an authenticated attacker to crash the client applications of other users via large, crafted messages.\n\n","status":"published","published":"2024-03-15T09:11:21Z","modified":"2024-08-01T19:11:53Z","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":"2026-11-03T03:50:40.43027Z"}],"ghsa":[{"id":"GHSA-x6jw-w885-qwpc","title":"Mattermost versions 8.1.x before 8.1.10, 9.2.x before 9.2.6, 9.3.x before 9.3.2, and 9.4.x before...","description":"Mattermost versions 8.1.x before 8.1.10, 9.2.x before 9.2.6, 9.3.x before 9.3.2, and 9.4.x before 9.4.3 fail to limit the number of @-mentions processed per message, allowing an authenticated attacker to crash the client applications of other users via large, crafted messages.\n\n","status":"published","published":"2024-03-15T12:30:36Z","modified":"2024-12-13T18:31:55Z","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","CWE-770"],"updated_at":"2026-11-02T14:59:11.49172Z"}],"nvd":[{"id":"CVE-2024-2446","description":"Mattermost versions 8.1.x before 8.1.10, 9.2.x before 9.2.6, 9.3.x before 9.3.2, and 9.4.x before 9.4.3 fail to limit the number of @-mentions processed per message, allowing an authenticated attacker to crash the client applications of other users via large, crafted messages.\n\n","status":"published","published":"2024-03-15T10:15:08.23Z","modified":"2026-06-17T07:24:33.17Z","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":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":"primary"}],"cwes":["CWE-400","CWE-770"],"updated_at":"2026-11-02T14:09:40.831473Z"}],"osv":[{"id":"CVE-2024-2446","description":"Mattermost versions 8.1.x before 8.1.10, 9.2.x before 9.2.6, 9.3.x before 9.3.2, and 9.4.x before 9.4.3 fail to limit the number of @-mentions processed per message, allowing an authenticated attacker to crash the client applications of other users via large, crafted messages.\n\n","status":"published","published":"2024-03-15T09:11:21.446Z","modified":"2026-11-07T02:46:35.976554683Z","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":"2026-11-07T03:07:52.522814Z"},{"id":"BIT-mattermost-2024-2446","description":"Mattermost versions 8.1.x before 8.1.10, 9.2.x before 9.2.6, 9.3.x before 9.3.2, and 9.4.x before 9.4.3 fail to limit the number of @-mentions processed per message, allowing an authenticated attacker to crash the client applications of other users via large, crafted messages.","status":"published","published":"2024-12-16T07:15:35.279Z","modified":"2025-04-03T14:40:37.652Z","updated_at":"2026-11-02T15:28:33.072289Z"}]}}