{"id":"CVE-2023-5196","aliases":["EUVD-2023-2399","GHSA-33r7-wjfc-7w98"],"status":"published","title":"DoS via Channel Notification Properties","description":"Mattermost fails to enforce character limits in all possible notification props allowing an attacker to send a really long value for a notification_prop resulting in the server consuming an abnormal quantity of computing resources and possibly becoming temporarily unavailable for its 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Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-5196","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-33r7-wjfc-7w98"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/5xxx/CVE-2023-5196.json","tags":["advisory"]},{"url":"https://github.com/mattermost/mattermost","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2023-5196","title":"DoS via Channel Notification Properties","description":"Mattermost fails to enforce character limits in all possible notification props allowing an attacker to send a really long value for a notification_prop resulting in the server consuming an abnormal quantity of computing resources and possibly becoming temporarily unavailable for its users. \n\n\n\n","status":"published","published":"2023-09-29T09:22:36.286Z","modified":"2024-09-20T16:02:00.219Z","cvss":[{"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":"cna"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:35:17.149492Z"}],"euvd":[{"id":"EUVD-2023-2399","description":"Mattermost fails to enforce character limits in all possible notification props allowing an attacker to send a really long value for a notification_prop resulting in the server consuming an abnormal quantity of computing resources and possibly becoming temporarily unavailable for its users. \n\n\n\n","status":"published","published":"2023-09-29T09:22:36Z","modified":"2024-09-20T16:02:00Z","cvss":[{"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"}],"updated_at":"2026-11-03T00:28:17.874342Z"}],"ghsa":[{"id":"GHSA-33r7-wjfc-7w98","title":"Mattermost Uncontrolled Resource Consumption vulnerability","description":"Mattermost fails to enforce character limits in all possible notification props allowing an attacker to send a really long value for a notification_prop resulting in the server consuming an abnormal quantity of computing resources and possibly becoming temporarily unavailable for its users. \n\n\n\n","status":"published","published":"2023-09-29T12:30:16Z","modified":"2023-11-11T05:05:10Z","cvss":[{"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"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:37:20.311836Z"}],"nvd":[{"id":"CVE-2023-5196","description":"Mattermost fails to enforce character limits in all possible notification props allowing an attacker to send a really long value for a notification_prop resulting in the server consuming an abnormal quantity of computing resources and possibly becoming temporarily unavailable for its users. 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\n\n\n\n","status":"published","published":"2023-09-29T09:22:36.286Z","modified":"2026-10-28T02:30:58.918281709Z","cvss":[{"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"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:44:35.245372Z"},{"id":"GHSA-33r7-wjfc-7w98","title":"Mattermost Uncontrolled Resource Consumption vulnerability","description":"Mattermost fails to enforce character limits in all possible notification props allowing an attacker to send a really long value for a notification_prop resulting in the server consuming an abnormal quantity of computing resources and possibly becoming temporarily unavailable for its users. \n\n\n\n","status":"published","published":"2023-09-29T12:30:16Z","modified":"2023-11-08T04:13:45.852679Z","cvss":[{"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"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:46:35.050232Z"}]}}