CVSS 3.1 Score 4.3 of 10 (medium)


Published May 26, 2024
Updated: May 28, 2024
CWE ID 200


CVE-2024-34029 is a cyber vulnerability that affects Mattermost versions 9.5.x <= 9.5.3, 9.7.x <= 9.7.1, and 8.1.x <= 8.1.12. It is identified that the software fails to perform a proper authorization check in the "/api/v4/groups/<group-id>/channels/<channel-id>/link" endpoint, allowing a user to learn the members of an AD/LDAP group linked to a team by adding the group to a channel, even if the user has no access to the team. The risk score for this vulnerability is 5 out of 10, indicating a medium severity level. The base score is rated at 4.3, with low privileges required and no user interaction necessary for exploitation. The potential danger lies in unauthorized access to sensitive information from linked groups, posing a risk to organizational confidentiality and potentially compromising data integrity.


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