CVE-2025-6227
July 18, 2025
Mattermost versions 10.5.x <= 10.5.7, 9.11.x <= 9.11.16 fail to negotiate a new token when accepting the invite which allows a user that intercepts both invite and password to send synchronization payloads to the server that originally created the invite via the REST API.
Affected Packages
github.com/mattermost/mattermost-server (GO):
Affected version(s) >=v10.5.0 <v10.5.8Fix Suggestion:
Update to version v10.5.8github.com/mattermost/mattermost (GO):
Affected version(s) >=v10.5.0 <v10.5.8Fix Suggestion:
Update to version v10.5.8github.com/mattermost/mattermost/server/v8 (GO):
Affected version(s) >=v8.0.0-20230429093631-aac4f2337933 <v8.0.0-20250612074655-8f8612c63783Fix Suggestion:
Update to version v8.0.0-20250612074655-8f8612c63783github.com/mattermost/mattermost-server (GO):
Affected version(s) >=v9.11.0 <v9.11.17Fix Suggestion:
Update to version v9.11.17github.com/mattermost/mattermost (GO):
Affected version(s) >=v9.11.0 <v9.11.17Fix Suggestion:
Update to version v9.11.17Related Resources (1)
Do you need more information?
Contact UsCVSS v4
Base Score:
2.1
Attack Vector
NETWORK
Attack Complexity
HIGH
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:
2.2
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Insufficiently Protected Credentials
EPSS
Base Score:
0.03
