CVE-2025-4128
June 11, 2025
Mattermost versions 10.5.x <= 10.5.4, 9.11.x <= 9.11.13 fail to properly restrict API access to team information, allowing guest users to bypass permissions and view information about public teams they are not members of via a direct API call to /api/v4/teams/{team_id}.
Affected Packages
https://github.com/mattermost/mattermost.git (GITHUB):
Affected version(s) >=v10.5.0 <v10.5.5Fix Suggestion:
Update to version v10.5.5https://github.com/mattermost/mattermost.git (GITHUB):
Affected version(s) >=v9.11.0 <v9.11.14Fix Suggestion:
Update to version v9.11.14github.com/mattermost/mattermost-server (GO):
Affected version(s) >=v10.5.0 <v10.5.5Fix Suggestion:
Update to version v10.5.5github.com/mattermost/mattermost/server/v8 (GO):
Affected version(s) >=v8.0.0-20230429093631-aac4f2337933 <v8.0.0-20250422131222-701ddc896a10Fix Suggestion:
Update to version v8.0.0-20250422131222-701ddc896a10github.com/mattermost/mattermost-server (GO):
Affected version(s) >=v9.11.0 <v9.11.14Fix Suggestion:
Update to version v9.11.14Related Resources (6)
Do you need more information?
Contact UsCVSS v4
Base Score:
2.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
3.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Incorrect Authorization
EPSS
Base Score:
0.04
