UpHeron
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Servers and applications

CVE-2023-2831

Mattermost fails to unescape Markdown strings in a memory-efficient way, allowing an attacker to cause a Denial of Service by sending a message containing a large number of escaped characters.

Severity
Medium 6.5
Published
16 Jun 2023
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
MattermostServers and applications · cpe:a:mattermost:mattermost
  • From 7.1.0 up to 7.1.9
  • From 7.8.0 up to 7.8.4
  • From 7.9.0 up to 7.9.3
  • Version 7.10.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2023-2831
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2023-2831