UpHeron
All vulnerabilities

Servers and applications

CVE-2023-4478

Mattermost fails to restrict which parameters' values it takes from the request during signup allowing an attacker to register users as inactive, thus blocking them from later accessing Mattermost without the system admin activating their accounts.

Severity
High 8.2
Published
25 Aug 2023
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
7.8.9, 7.10.5
Sources
NVD

Affected software

SoftwareAffected versions
MattermostServers and applications · cpe:a:mattermost:mattermost_server
  • Every version before 7.8.9
  • From 7.9.0 before 7.10.5
  • Version 8.0.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2023-4478
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2023-4478