CVE-2026-3117
Medium · 6.5CVSS
6.5
EPSS
0.4%
Published
May 18, 2026
CISA due date
—
The record
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
| Ecosystem | Package | Introduced | Fixed |
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