Security Advisory

CVE-2026-6347

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-05-18 08:30:41

Last updated 2026-05-18 14:38:21

Assigner Mattermost

CVSS score 7.6

State PUBLISHED

Description

Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail to sanitize sensitive configuration fields in the Mattermost Calls plugin which allows an attacker with access to a support packet to obtain TURN server credentials via the plaintext values present in the exported plugin configuration.. Mattermost Advisory ID: MMSA-2026-00605

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