CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
AI Score
Confidence
High
EPSS
Percentile
9.0%
Mattermost is vulnerable to Improper Access Control. The vulnerability is due to an improper check of the invite_guest
permission, allowing a member with permissions to add other members but not to add guests to add a guest to a team, provided the guest was already a guest in another team of the server.