UpHeron
All vulnerabilities

Servers and applications

CVE-2025-41410

Mattermost versions 10.10.x <= 10.10.2, 10.5.x <= 10.5.10, 10.11.x <= 10.11.2 fail to validate email ownership during Slack import process which allows attackers to create verified user accounts with arbitrary email domains via malicious Slack import data to bypass email-based team access restrictions

Severity
Medium 5.4
Published
16 Oct 2025
Last changed
19 Oct 2026
Added to UpHeron
1 Nov 2026
Fixed in
10.5.11, 10.10.3, 10.11.3
Sources
NVD

Affected software

SoftwareAffected versions
MattermostServers and applications · cpe:a:mattermost:mattermost_server
  • From 10.5.0 before 10.5.11
  • From 10.10.0 before 10.10.3
  • From 10.11.0 before 10.11.3

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2025-41410
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2025-41410