Security Advisory

CVE-2026-3524

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-04-06 12:06:22

Last updated 2026-04-07 03:55:35

Assigner Mattermost

State PUBLISHED

Description

Mattermost Plugin Legal Hold versions <=1.1.4 fail to halt request processing after a failed authorization check in ServeHTTP which allows an authenticated attacker to access, create, download, and delete legal hold data via crafted API requests to the plugins endpoints. Mattermost Advisory ID: MMSA-2026-00621

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