Vulnerability DatabaseCVE-2026-3112
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CVE-2026-3112
March 26, 2026
Mattermost versions 11.4.x <= 11.4.0, 11.3.x <= 11.3.1, 11.2.x <= 11.2.3, 10.11.x <= 10.11.11 fail to validate Advanced Logging file target paths which allows system administrators to read arbitrary host files via malicious AdvancedLoggingJSON configuration in support packet generation. Mattermost Advisory ID: MMSA-2025-00562
Affected Packages
github.com/mattermost/mattermost (GO):
Affected version(s) =v11.4.0 <v11.4.1
Fix Suggestion:
Update to version v11.4.1
github.com/mattermost/mattermost (GO):
Affected version(s) >=v11.2.0 <v11.2.4
Fix Suggestion:
Update to version v11.2.4
github.com/mattermost/mattermost (GO):
Affected version(s) >=v10.11.0 <v10.11.12
Fix Suggestion:
Update to version v10.11.12
github.com/mattermost/mattermost (GO):
Affected version(s) =v11.4.0 <v11.4.1
Fix Suggestion:
Update to version v11.4.1
github.com/mattermost/mattermost (GO):
Affected version(s) >=v11.2.0 <v11.2.4
Fix Suggestion:
Update to version v11.2.4
github.com/mattermost/mattermost (GO):
Affected version(s) >=v11.3.0 <v11.3.2
Fix Suggestion:
Update to version v11.3.2
github.com/mattermost/mattermost (GO):
Affected version(s) >=v11.3.0 <v11.3.2
Fix Suggestion:
Update to version v11.3.2
github.com/mattermost/mattermost (GO):
Affected version(s) >=v10.11.0 <v10.11.12
Fix Suggestion:
Update to version v10.11.12
Related Resources (1)
https://mattermost.com/security-updates
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CVSS v4
Base Score:
8.2
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
HIGH
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-22
EPSS
Base Score:
0.04