CVE-2026-3117 — Instance and webhook GitLab plugin commands were able to be run by non-admin users

CVE-2026-3117

Instance and webhook GitLab plugin commands were able to be run by non-admin users PUBLISHED

Description (CNA)

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 (CNA)

Vendor / product	Versions
Mattermost / Mattermost	affected 0 through 11.1.5; affected 0 through 10.13.11; affected 0 through 11.3.4; unaffected 11.6.0; unaffected 11.5.2; unaffected 10.11.14; unaffected 11.4.4

CWE

CWE-862

References

https://mattermost.com/security-updates

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.