CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
AI Score
Confidence
High
Mattermost is vulnerable to Improper Access Control. The vulnerability is due to a failure to prevent specifying a RemoteId when creating a new user, allowing attackers to create a user with a user-defined ID, which can cause broken functionality in User Management.