UpHeron
All vulnerabilities

Servers and applications

CVE-2025-3446

Mattermost versions 10.6.x <= 10.6.1, 10.5.x <= 10.5.2, 10.4.x <= 10.4.4, 9.11.x <= 9.11.11 fail to check the correct permissions which allows authenticated users who only have permission to invite non-guest users to a team to add guest users to that team via the API to add a single user to a team.

Severity
Medium 4.3
Published
15 May 2025
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
9.11.12, 10.4.5, 10.5.3, 10.6.2
Sources
NVD

Affected software

SoftwareAffected versions
MattermostServers and applications · cpe:a:mattermost:mattermost_server
  • From 9.11.0 before 9.11.12
  • From 10.4.0 before 10.4.5
  • From 10.5.0 before 10.5.3
  • From 10.6.0 before 10.6.2

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2025-3446
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2025-3446