CVE-2024-39807 Channel IDs of archived/restored channels leaked via webhook events
Attackers monitoring webhook events can retrieve channel IDs of archived or restored channels in Mattermost, exposing internal structure.
- 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-2024-39807?
CVE-2024-39807 is a low-severity vulnerability in Mattermost Mattermost, published on 3 Jul 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Mattermost versions 9.5.x <= 9.5.5 and 9.8.0 fail to properly sanitize the recipients of a webhook event which allows an attacker monitoring webhook events to retrieve the channel IDs of archived or restored channels.
Weakness: CWE-200
Which versions are affected by CVE-2024-39807?
It affects 1 product.
Products include Mattermost Mattermost.
How do I fix CVE-2024-39807?
No fix has been published for CVE-2024-39807 yet. Limit exposure of the affected software until one is available.
Is CVE-2024-39807 being exploited?
There is no known exploitation of CVE-2024-39807 in the wild and no public exploit code.
Other vulnerabilities in Mattermost Mattermost
- CVE-2019-20851 Path traversal in n/a
- CVE-2024-39274 Malicious remote can add users to arbitrary teams and channels
- CVE-2024-39777 Malicious remote can invite itself to an arbitrary local channel
- CVE-2024-39830 Timing attack during remote cluster token comparison when shared channels are enabled
- CVE-2023-3615 Lack of server certificate validation in websockets connection
Sources
Also known as GHSA-fc2h-j9fj-rh35.