Mattermost · Mattermost Welcomebot Plugin · CVE-2023-3613
**Name of the Vulnerable Software and Affected Versions**
Mattermost WelcomeBot plugin (affected versions not specified)
**Description**
The Mattermost WelcomeBot plugin fails to validate the membership status when inviting or adding users to channels, allowing guest accounts to be added or invited to channels by default.
**Recommendations**
At the moment, there is no information about a newer version that contains a fix for this vulnerability.