CVE-2026-3524 — Authorization Bypass in Mattermost Legal Hold Plugin Due to Missing Return After Permission Check
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, c…
Published: 2026-04-06 · CVSS: 8.3 · CVSS 3.1
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
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7