CVE-2026-3117

6.5 MEDIUM

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...

Published: 2026-05-18 · Last updated: 2026-05-29

Severity and scoring

CVSS: 6.5 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE: CWE-862

Affected products

Vendor	Product
mattermost	mattermost_server

Description

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

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-3117
[Vendor advisory]https://mattermost.com/security-updates

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