CVE-2025-11794
November 14, 2025
Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11, 10.12.x <= 10.12.0 fail to sanitize user data which allows system administrators to access password hashes and MFA secrets via the POST /api/v4/users/{user_id}/email/verify/member endpoint
Affected Packages
github.com/mattermost/mattermost-server (GO):
Affected version(s) >=v10.5.0 <v10.5.12Fix Suggestion:
Update to version v10.5.12github.com/mattermost/mattermost/server/v8 (GO):
Affected version(s) >=v8.0.0-20230429093631-aac4f2337933 <v8.0.0-20250929212932-a41db04d2746Fix Suggestion:
Update to version v8.0.0-20250929212932-a41db04d2746github.com/mattermost/mattermost (GO):
Affected version(s) >=v10.11.0 <v10.11.4Fix Suggestion:
Update to version v10.11.4github.com/mattermost/mattermost-server (GO):
Affected version(s) >=v10.12.0 <v10.12.1Fix Suggestion:
Update to version v10.12.1github.com/mattermost/mattermost-server (GO):
Affected version(s) >=v10.11.0 <v10.11.4Fix Suggestion:
Update to version v10.11.4github.com/mattermost/mattermost (GO):
Affected version(s) >=v10.5.0 <v10.5.12Fix Suggestion:
Update to version v10.5.12github.com/mattermost/mattermost (GO):
Affected version(s) =v10.12.0 <v10.12.1Fix Suggestion:
Update to version v10.12.1Related Resources (9)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
HIGH
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.9
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Exposure of Sensitive Information to an Unauthorized Actor
EPSS
Base Score:
0.05
