Security Advisory

CVE-2026-6341

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-05-18 07:05:03

Last updated 2026-05-18 14:32:15

Assigner Mattermost

CVSS score 4.3

State PUBLISHED

Description

Mattermost Plugins versions <=11.5 11.1.5 10.13.11 11.3.4.0 fail to have API-level checks on which groups the user can create issues or attach comments to which allows a user that is member of multiple groups to create issues to a locked group via direct API requests. Mattermost Advisory ID: MMSA-2026-00602

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