Mattermost versions 11.4.x <= 11.4.0, 11.3.x <= 11.3.1, 11.2.x <= 11.2.3, 10.11.x <= 10.11.11 fail to set permissions on downloaded bulk export which allows other local users on the server to be able to read contents of the bulk export.. Mattermost Advisory ID: MMSA-2026-00593
Exploitability
AV:LAC:LPR:LUI:RScope
S:UImpact
C:HI:NA:N5/CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:NConfiguration