CVE-2024-47145 Unauthorized access on archived channels via file links
Attackers can view posts and files in archived channels via file links when archived channel viewing is disabled.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-47145?
CVE-2024-47145 is a low-severity missing authorization vulnerability in Mattermost Mattermost Server, published on 26 Sep 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Mattermost versions 9.5.x <= 9.5.8 fail to properly authorize access to archived channels when viewing archived channels is disabled, which allows an attacker to view posts and files of archived channels via file links.
Weakness: CWE-284
Which versions are affected by CVE-2024-47145?
1 open source package ship an affected version, including mattermost. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mattermost Bitnami | From 9.5.0 | 9.5.9 |
Products include Mattermost Mattermost Server.
How do I fix CVE-2024-47145?
Upgrade mattermost to 9.5.9 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2024-47145 being exploited?
There is no known exploitation of CVE-2024-47145 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 BIT-mattermost-2024-47145, GHSA-326r-7r4v-wq8c.