CVE-2024-4198
Published:April 26, 2024
Updated:April 23, 2026
Mattermost versions 9.6.0, 9.5.x before 9.5.3, and 8.1.x before 8.1.12 fail to fully validate role changes which allows an attacker authenticated as team admin to demote users to guest via crafted HTTP requests.
Affected Packages
github.com/mattermost/mattermost-server (GO):
Affected version(s) >=v8.1.0 <v8.1.12Fix Suggestion:
Update to version v8.1.12github.com/mattermost/mattermost-server (GO):
Affected version(s) >=v9.6.0-rc1 <v9.6.1Fix Suggestion:
Update to version v9.6.1github.com/mattermost/mattermost-server (GO):
Affected version(s) >=v9.5.0 <v9.5.3Fix Suggestion:
Update to version v9.5.3Related Resources (7)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
HIGH
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
2.7
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Access Control
EPSS
Base Score:
0.14
