All vulnerabilities

Servers and applications

CVE-2021-37865

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.

Severity
Medium 5.7
Published
18 Jan 2022
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
MattermostServers and applications · cpe:a:mattermost:mattermost
  • Every version up to 6.2.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-37865
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-37865