CVE-2025-47871
Published At:June 30, 2025
Updated At:April 07, 2026
Mattermost versions 10.5.x <= 10.5.5, 9.11.x <= 9.11.15, 10.8.x <= 10.8.0, 10.7.x <= 10.7.2, 10.6.x <= 10.6.5 fail to properly validate channel membership when retrieving playbook run metadata, allowing authenticated users who are playbook members but not channel members to access sensitive information about linked private channels including channel name, display name, and participant count through the run metadata API endpoint.
Affected Packages
github.com/mattermost/mattermost (GO):
Affected version(s) >=v10.5.0 <v10.5.6Fix Suggestion:
Update to version v10.5.6github.com/mattermost/mattermost (GO):
Affected version(s) =v10.8.0 <v10.8.1Fix Suggestion:
Update to version v10.8.1github.com/mattermost/mattermost (GO):
Affected version(s) >=v10.6.0 <v10.6.6Fix Suggestion:
Update to version v10.6.6github.com/mattermost/mattermost/server/v8 (GO):
Affected version(s) >=v8.0.0-20230429093631-aac4f2337933 <v8.0.0-20250513065225-4ae5d647fb88Fix Suggestion:
Update to version v8.0.0-20250513065225-4ae5d647fb88github.com/mattermost/mattermost (GO):
Affected version(s) >=v10.7.0 <v10.7.3Fix Suggestion:
Update to version v10.7.3github.com/mattermost/mattermost (GO):
Affected version(s) >=v9.11.0 <v9.11.16Fix Suggestion:
Update to version v9.11.16Related Resources (1)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
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:
4.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Incorrect Authorization
EPSS
Base Score:
0.06
