CVE-2026-3113

MEDIUM

mmctl export download command doesn’t restrict permissions to created file to file owner

Title source: cna

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

References (1)

[Vendor Advisory] https://mattermost.com/security-updates

Scores

CVSS v3 5.0

EPSS 0.0001

EPSS Percentile 0.2%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-732

Status published

Products (12)

Mattermost/Mattermost 10.11.0 - 10.11.11

Mattermost/Mattermost 10.11.12

Mattermost/Mattermost 11.2.0 - 11.2.3

Mattermost/Mattermost 11.2.4

Mattermost/Mattermost 11.3.0 - 11.3.1

Mattermost/Mattermost 11.3.2

Mattermost/Mattermost 11.4.0

Mattermost/Mattermost 11.4.1

Mattermost/Mattermost 11.5.0

mattermost/mattermost-server 11.4.0-rc1 - 11.4.1Go

... and 2 more

Published Mar 26, 2026

Tracked Since Mar 26, 2026