CVE-2022-3257

MediumCVSS 6.5/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-400CWE-434

Affected software

No affected versions have been published.

Timeline

Published
Sep 23, 2022
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2022-3257: Medium severity, CVSS 6.5 | Vulnix