VULNERABILITY INTELLIGENCE

CVE-2024-34029

CVSS score4.3 MEDIUM
EPSS probability0.30%
CISA KEVNot currently listed
Published2024-05-26
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

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.

Weakness classification

  • responsibledisclosure@mattermost.com: CWE-200

Primary references