{"id":"CVE-2022-3257","aliases":["BIT-mattermost-2022-3257","EUVD-2022-6874","GHSA-m7w4-q5vg-5xfp"],"status":"published","title":"Server-side Denial of Service while processing a specifically crafted GIF file","description":"Mattermost version 7.1.x 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 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Advisory","web"]},{"url":"https://hackerone.com/reports/1620170","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-3257","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-m7w4-q5vg-5xfp"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/3xxx/CVE-2022-3257.json","tags":["advisory"]},{"url":"https://github.com/mattermost/mattermost-server","tags":["package"]},{"url":"https://mattermost.com/security-updates","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2022-3257","title":"Server-side Denial of Service while processing a specifically crafted GIF file","description":"Mattermost version 7.1.x 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 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version 7.1.x 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.","status":"published","published":"2022-09-25T00:00:21Z","modified":"2023-03-27T14:28:00Z","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"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:36:48.905887Z"}],"nvd":[{"id":"CVE-2022-3257","description":"Mattermost version 7.1.x 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.","status":"published","published":"2022-09-23T15:15:13.857Z","modified":"2026-06-17T04:59:10.27Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low","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","CWE-434"],"updated_at":"2026-11-02T14:07:28.501364Z"}],"osv":[{"id":"CVE-2022-3257","title":"Server-side Denial of Service while processing a specifically crafted GIF file","description":"Mattermost version 7.1.x 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.","status":"published","published":"2022-09-23T14:13:39Z","modified":"2026-10-28T02:31:14.988092355Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:44:25.860945Z"},{"id":"GHSA-m7w4-q5vg-5xfp","title":"Mattermost subject to Denial of Service via upload of special GIF","description":"Mattermost version 7.1.x 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.","status":"published","published":"2022-09-25T00:00:21Z","modified":"2023-12-06T01:02:21.507277Z","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-434"],"updated_at":"2026-11-02T15:46:51.463834Z"},{"id":"BIT-mattermost-2022-3257","description":"Mattermost version 7.1.x 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.","status":"published","published":"2024-03-06T11:03:00.274Z","modified":"2025-04-03T14:40:37.652Z","updated_at":"2026-11-02T15:28:33.072289Z"}]}}