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
References
| Link | Resource |
|---|---|
| https://mattermost.com/security-updates | Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
29 May 2026, 19:12
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://mattermost.com/security-updates - Vendor Advisory | |
| CPE | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | |
| First Time |
Mattermost mattermost Server
Mattermost |
18 May 2026, 09:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-18 09:16
Updated : 2026-05-29 19:12
NVD link : CVE-2026-3117
Mitre link : CVE-2026-3117
CVE.ORG link : CVE-2026-3117
JSON object : View
Products Affected
mattermost
- mattermost_server
CWE
CWE-862
Missing Authorization