Mattermost: >> Mattermost Server >> 7.9.5 Security Vulnerabilities
Mattermost fails to validate team membership when a user attempts to access a playbook, allowing a user with permissions to a playbook but no permissions to the team the playbook is on to access and modify the playbook. This can happen if the user was once a member of the team, got permissions to the playbook and was then removed from the team.
CVSS Score
3.7
EPSS Score
0.003
Published
2023-12-12
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.
CVSS Score
4.3
EPSS Score
0.004
Published
2023-08-25
Mattermost WelcomeBot plugin fails to to validate the membership status when inviting or adding users to channels allowing guest accounts to be added or invited to channels by default.
CVSS Score
3.5
EPSS Score
0.003
Published
2023-07-17
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