Security Advisory

CVE-2025-6226

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2025-07-18 08:48:02

Last updated 2025-08-07 09:53:06

Assigner Mattermost

State PUBLISHED

Description

Mattermost versions 10.5.x <= 10.5.6, 10.8.x <= 10.8.1, 10.7.x <= 10.7.3, 9.11.x <= 9.11.16 fail to verify authorization when retrieving cached posts by PendingPostID which allows an authenticated user to read posts in private channels they dont have access to via guessing the PendingPostID of recently created posts.

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