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GHSA-5qx9-9ffj-5r8f: Mattermost fails to fully validate role changes

Mattermost versions 9.6.0, 9.5.x before 9.5.3, and 8.1.x before 8.1.12 fail to fully validate role changes which allows an attacker authenticated as team admin to demote users to guest via crafted HTTP requests.

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  1. GitHub Advisory Database
  2. GitHub Reviewed
  3. CVE-2024-4198

Mattermost fails to fully validate role changes

Low severity GitHub Reviewed Published Apr 26, 2024 to the GitHub Advisory Database • Updated Apr 26, 2024

Package

gomod github.com/mattermost/mattermost-server (Go)

Affected versions

>= 9.6.0-rc1, <= 9.6.0

>= 9.5.0, <= 9.5.2

>= 8.1.0, <= 8.1.11

Patched versions

9.6.1

9.5.3

8.1.12

Description

Published to the GitHub Advisory Database

Apr 26, 2024

Last updated

Apr 26, 2024

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