CVE-2022-3257
Mattermost subject to Denial of Service via upload of special GIF
6.5
MEDIUM
CVSS 3.1
EPSS 0.40%
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.
How to fix CVE-2022-3257
To remediate CVE-2022-3257, upgrade the affected package to a fixed version below.
- —upgrade to 7.2.0 or later
- —upgrade to 7.2.0 or later
Is CVE-2022-3257 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 7.2.0
- >= 7.1.0, < 7.2.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |