CVE-2024-34029
Mattermost versions 9.5.x <= 9.5.3, 9.7.x <= 9.7.1 and 8.1.x <= 8.1.12 fail to perform a proper authorization check in the /api/v4/groups/<group-id>/channels/<channel-id>/link endpoint which allows a user to learn the members of an AD/LDAP group that is linked to a team by adding the group to a channel, even if the user has no access to the team.
| Software | From | Fixed in |
|---|---|---|
| mattermost / mattermost_server | 8.1.0 | 8.1.13 |
| mattermost / mattermost_server | 9.5.0 | 9.5.4 |
| mattermost / mattermost_server | 9.7.0 | 9.7.2 |
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