CVE-2024-12247 Improper propagation of permission scheme updates across cluster nodes
Attackers retain outdated permissions in clustered Mattermost deployments due to improper scheme propagation, enabling unauthorized access or privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2024-12247?
CVE-2024-12247 is a medium-severity missing authorization vulnerability in Mattermost Mattermost Server, published on 5 Dec 2024. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Mattermost versions 9.7.x <= 9.7.5, 9.8.x <= 9.8.2 and 9.9.x <= 9.9.2 fail to properly propagate permission scheme updates across cluster nodes which allows a user to keep old permissions, even if the permission scheme has been updated.
Weakness: CWE-863
Which versions are affected by CVE-2024-12247?
It affects 1 product.
Products include Mattermost Mattermost Server.
How do I fix CVE-2024-12247?
No fix has been published for CVE-2024-12247 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2024-12247 being exploited?
There is no known exploitation of CVE-2024-12247 in the wild and no public exploit code.
Other vulnerabilities in Mattermost Mattermost Server
- CVE-2025-12419 Account takeover on OAuth/OpenID-enabled servers
- CVE-2025-12421 Account Takeover via Code Exchange Endpoint
- CVE-2025-4981 Path Traversal Leading to RCE by Any Authenticated Mattermost User
- CVE-2025-20051 Arbitrary file read via block duplication in Mattermost Boards
- CVE-2025-25279 Arbitrary file read in Mattermost Boards via import & export board archive
Sources
Also known as GHSA-8chw-qpp9-9385.