CVE-2024-42406

Medium

Description

Mattermost versions 9.11.x <= 9.11.0, 9.10.x <= 9.10.1, 9.9.x <= 9.9.2 and 9.5.x <= 9.5.8 fail to properly authorize requests when viewing archived channels is disabled, which allows an attacker to retrieve post and file information about archived channels. Examples are flagged or unread posts as well as files.

SeverityMedium
CVSS5.4
Exploit probability—
ProductMattermost Server
PublishedSep 26, 2024
First seenSep 26, 2024

How to fix

Update
  • mattermost mattermost_server9.5.9, 9.9.3, 9.10.2 or later

Affected products

ProductAffected versionsFixed in
mattermost mattermost_server9.5.0 ≤ v < 9.5.9, 9.9.0 ≤ v < 9.9.3, 9.10.0 ≤ v < 9.10.2, 9.11.09.5.9, 9.9.3, 9.10.2

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