Mattermost 9.9.x9.9.0 / 9.5.x9.5.6 Remote ID Validation Bypass in Sync
CVE-2024-41926 Published on August 1, 2024
Malicious remote can claim that a user was synced from another remote
Mattermost versions 9.9.x <= 9.9.0 and 9.5.x <= 9.5.6 fail to validate the source of sync messages and only allow the correct remote IDs, which allows a malicious remote to set arbitrary RemoteId values for synced users and therefore claim that a user was synced from another remote.
Vulnerability Analysis
CVE-2024-41926 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-2024-41926 has been classified to as an Authorization vulnerability or weakness.
Products Associated with CVE-2024-41926
stack.watch emails you whenever new vulnerabilities are published in Mattermost Server or MatterMost. Just hit a watch button to start following.
Affected Versions
Mattermost:- Version 9.9.0 is affected.
- Version 9.5.0, <= 9.5.6 is affected.
- Version 9.10.0 is unaffected.
- Version 9.9.1 is unaffected.
- Version 9.5.7 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.