CVE-2024-34029

AD/LDAP Group Members Leak

Published May 26, 2024 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

Vendor Solution

Update Mattermost to versions 9.8.0, 9.5.4, 9.7.2, 8.1.13 or higher.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2024-34599 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.
References
History
Type Values Removed Values Added
First Time appeared Mattermost mattermost Server
CPEs cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
Vendors & Products Mattermost mattermost Server
Weaknesses

Sources

Status
PUBLISHED
Assigner
Mattermost
Published
Updated
Aug 2, 2024, 2:42 AM
Reserved
May 23, 2024, 10:57 AM
Status
Analyzed
Published
May 26, 2024, 2:15 PM
Modified
Jun 17, 2026, 7:32 AM