{"id":"CVE-2021-37865","details":"Mattermost 6.2 and earlier fails to sufficiently process a specifically crafted GIF file when it is uploaded while drafting a post, which allows authenticated users to cause resource exhaustion while processing the file, resulting in server-side Denial of Service.","modified":"2026-04-10T04:36:10.969536Z","published":"2022-01-18T17:15:08.457Z","references":[{"type":"ADVISORY","url":"https://mattermost.com/security-updates/"},{"type":"REPORT","url":"https://hackerone.com/reports/1428260"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mattermost/mattermost-server","events":[{"introduced":"0"},{"last_affected":"7dcc03f1a215faaa5ded6592fb06420a8d87f439"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"6.2.0"}]}}],"versions":["cloud-2020-11-24","cloud-2020-12-08","cloud-2020-12-18","cloud-2021-01-12","cloud-2021-01-26","cloud-2021-02-10","cloud-2021-02-24","cloud-2021-02-25-1","cloud-2021-03-12-1","cloud-2021-03-23-1","cloud-2021-04-22-1","cloud-2021-05-05-1","cloud-2021-05-21-1","cloud-2021-06-02-1","cloud-2021-06-16-1","cloud-2021-07-01-1","cloud-2021-07-15-1","cloud-2021-07-29-1","cloud-2021-08-12-1","cloud-2021-09-29-1","cloud-2021-10-12-1","cloud-2021-10-27-1","cloud-2021-11-09-1","cloud-2021-11-11-1","cloud-2021-11-23-1","v0.5.0","v4.10.0-rc1","v4.2.0-rc1","v4.3.0-rc1","v4.4.0-rc1","v4.5.0-rc1","v4.6.0-rc1","v4.6.0-rc2","v4.7.0-rc1","v4.8.0-rc1","v4.9.0-rc1","v5.0.0-rc1","v5.1.0-rc1","v5.2.0-rc1","v5.2.0-rc2","v6.2.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-37865.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H"}]}