4.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
6.7 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
9.1%
Mattermost is vulnerable to Exposure of Sensitive Information to an Unauthorized Actor. The vulnerability is due to a lack of proper authorization checks in the /api/v4/groups//channels//link
endpoint, allowing users to learn members of an AD/LDAP group linked to a team by adding the group to a channel, even without team access.
4.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
6.7 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
9.1%