Mattermost 8.1.x/9.5.x Pre-9.5.3 RBAC Bypass Allows Admin to Demote Users to Guest
CVE-2024-4198 Published on April 26, 2024
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.
Vulnerability Analysis
CVE-2024-4198 is exploitable with network access, and requires user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, with no impact on integrity, and no impact on availability.
Weakness Type
What is an Authorization Vulnerability?
The software does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
CVE-2024-4198 has been classified to as an Authorization vulnerability or weakness.
Products Associated with CVE-2024-4198
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Affected Versions
Mattermost:- Version 9.6.0 is affected.
- Version 9.5.0, <= 9.5.2 is affected.
- Version 8.1.0, <= 8.1.11 is affected.
- Version 9.7.0 is unaffected.
- Version 9.6.1 is unaffected.
- Version 9.5.3 is unaffected.
- Version 8.1.12 is unaffected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.