Auth Bypass Bookmark Creation/Update in Archived Channels - Mattermost <10.5.0
CVE-2025-24920 Published on March 21, 2025
Unauthorized Bookmark Creation and Modification in Archived Channels
Mattermost versions 10.4.x <= 10.4.2, 10.3.x <= 10.3.3, 9.11.x <= 9.11.8, 10.5.x <= 10.5.0 fail to restrict bookmark creation and updates in archived channels, which allows authenticated users created or update bookmarked in archived channels
Vulnerability Analysis
CVE-2025-24920 is exploitable with network access, and requires small amount of 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 AuthZ Vulnerability?
The software performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.
CVE-2025-24920 has been classified to as an AuthZ vulnerability or weakness.
Products Associated with CVE-2025-24920
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 10.4.0, <= 10.4.2 is affected.
- Version 10.3.0, <= 10.3.3 is affected.
- Version 9.11.0, <= 9.11.8 is affected.
- Version 10.5.0 is affected.
- Version 10.6.0 is unaffected.
- Version 10.4.3 is unaffected.
- Version 10.3.4 is unaffected.
- Version 9.11.9 is unaffected.
- Version 10.5.1 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.