CVE-2026-3113
MEDIUM5.0EPSS 0.01%Mattermost doesn't set permissions on downloaded bulk export
Published: 3/26/2026Modified: 3/31/2026
Description
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.
Affected packages (1)
- Go/github.com/mattermost/mattermost-server>= 11.4.0-rc1, < 11.4.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.0 | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N |