Description
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
Problem types
CWE-862: Missing Authorization
Product status
10.10.0
10.5.0
10.11.0
10.12.0
10.10.3
10.5.11
10.11.3
Credits
daw10
References
mattermost.com/security-updates
