CVE-2026-3117
Published:May 18, 2026
Updated:June 11, 2026
Mattermost Plugins versions <=11.5 11.1.5 10.13.11 11.3.4.0 fail to properly check for permissions when processing commands in the Gitlab plugin which allows normal users to uninstall instances or setup webhook connections via the {{gitlab instance {option}}} or the {{/gitlab webhook {option}}} commands. Mattermost Advisory ID: MMSA-2026-00600
Affected Packages
https://github.com/mattermost/mattermost-plugin-gitlab.git (GITHUB):
Affected version(s) >=v1.0.0 <v1.12.1Fix Suggestion:
Update to version v1.12.1github.com/mattermost/mattermost-plugin-gitlab (GO):
Affected version(s) >=v1.0.0 <v1.12.1Fix Suggestion:
Update to version v1.12.1Related Resources (1)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Missing Authorization
EPSS
Base Score:
0.03