CVE-2026-3524
HIGH
NVD
CVSS Score
8.8
Severity
HIGH
Published
Apr 06, 2026
Vendor
unknown
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 plugin's endpoints. Mattermost Advisory ID: MMSA-2026-00621