Security Advisory

CVE-2026-16045

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-08-17 14:26:22

Last updated 2026-08-17 15:26:05

Assigner Mattermost

CVSS score 2.7

State PUBLISHED

Description

Mattermost versions 11.7.x <= 11.7.6, 10.11.x <= 10.11.21 Mattermost failed to restrict OAuth deauthorization and personal access token management endpoints to direct user sessions, which allowed an OAuth app with a delegated user token to revoke the user's authorizations or tokens for other integrations via account-management endpoints.. Mattermost Advisory ID: MMSA-2026-00704

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