Vulnerability DatabaseCVE-2025-12756
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CVE-2025-12756
December 01, 2025
Mattermost versions 11.0.x <= 11.0.2, 10.12.x <= 10.12.1, 10.11.x <= 10.11.4, 10.5.x <= 10.5.12 fail to validate user permissions when deleting comments in Boards, which allows an authenticated user with the editor role to delete comments created by other users.
Affected Packages
github.com/mattermost/mattermost (GO):
Affected version(s) >=v10.11.0 <v10.11.5
Fix Suggestion:
Update to version v10.11.5
github.com/mattermost/mattermost (GO):
Affected version(s) >=v11.0.1-rc1 <v11.0.3
Fix Suggestion:
Update to version v11.0.3
github.com/mattermost/mattermost (GO):
Affected version(s) >=v10.11.0 <v10.11.5
Fix Suggestion:
Update to version v10.11.5
github.com/mattermost/mattermost (GO):
Affected version(s) >=v11.0.1-rc1 <v11.0.3
Fix Suggestion:
Update to version v11.0.3
github.com/mattermost/mattermost (GO):
Affected version(s) >=v10.5.0 <v10.5.13
Fix Suggestion:
Update to version v10.5.13
github.com/mattermost/mattermost (GO):
Affected version(s) >=v10.5.0 <v10.5.13
Fix Suggestion:
Update to version v10.5.13
github.com/mattermost/mattermost (GO):
Affected version(s) >=v10.12.0 <v10.12.2
Fix Suggestion:
Update to version v10.12.2
github.com/mattermost/mattermost (GO):
Affected version(s) >=v10.12.0 <v10.12.2
Fix Suggestion:
Update to version v10.12.2
github.com/mattermost/mattermost (GO):
Affected version(s) >=v10.5.0 <v10.5.13
Fix Suggestion:
Update to version v10.5.13
github.com/mattermost/mattermost (GO):
Affected version(s) >=v10.11.0 <v10.11.5
Fix Suggestion:
Update to version v10.11.5
github.com/mattermost/mattermost (GO):
Affected version(s) >=v11.0.1-rc1 <v11.0.3
Fix Suggestion:
Update to version v11.0.3
github.com/mattermost/mattermost (GO):
Affected version(s) >=v11.0.1-rc1 <v11.0.3
Fix Suggestion:
Update to version v11.0.3
github.com/mattermost/mattermost (GO):
Affected version(s) >=v10.5.0 <v10.5.13
Fix Suggestion:
Update to version v10.5.13
Related Resources (3)
https://mattermost.com/security-updates
https://nvd.nist.gov/vuln/detail/CVE-2025-12756
https://github.com/mattermost/mattermost
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CVSS 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
CWE-863
EPSS
Base Score:
0.03