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mattermost/mattermost · Security

Mattermost doesn't set permissions on downloaded bulk export

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GHSA ID
GHSA-4765-v66x-rqx7
CVE ID
CVE-2026-3113
Severity
medium
Published
Updated
CVSS
5 · CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
CVSS v3
5 · CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N

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.

CWEs

  • CWE-732 · Incorrect Permission Assignment for Critical Resource

References