CVE-2024-32045 Playbook run link to private channel grants channel access
Attackers can link playbook runs to private channels they do not belong to, gaining unauthorized access to private channel data.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-32045?
CVE-2024-32045 is a medium-severity missing authorization vulnerability in Mattermost Mattermost Server, published on 26 May 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Mattermost versions 9.5.x <= 9.5.3, 9.6.x <= 9.6.1, 8.1.x <= 8.1.12 fail to enforce proper access controls for channel and team membership when linking a playbook run to a channel which allows members to link their runs to private channels they were not members of.
Which versions are affected by CVE-2024-32045?
It affects 1 product.
Products include Mattermost Mattermost Server.
How do I fix CVE-2024-32045?
No fix has been published for CVE-2024-32045 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-2024-32045 being exploited?
There is no known exploitation of CVE-2024-32045 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