CVE-2024-39361

Creating posts with user-defined IDs permitted in CreatePost API

Description

Mattermost versions 9.8.0, 9.7.x <= 9.7.4, 9.6.x <= 9.6.2 and 9.5.x <= 9.5.5 fail to prevent users from specifying a RemoteId for their posts which allows an attacker to specify both a remoteId and the post ID, resulting in creating a post with a user-defined post ID. This can cause some broken functionality in the channel or thread with user-defined posts

Remediation

Solution:

  • Update Mattermost to versions 9.9.0, 9.8.1, 9.7.5, 9.6.3, 9.5.6 or higher.

Category

3.1
CVSS
Severity: Low
CVSS 3.1 •
EPSS 0.12%
Vendor Advisory mattermost.com
Affected: Mattermost Mattermost
Published at:
Updated at:

References

Link Tags
https://mattermost.com/security-updates vendor advisory

Frequently Asked Questions

What is the severity of CVE-2024-39361?
CVE-2024-39361 has been scored as a low severity vulnerability.
How to fix CVE-2024-39361?
To fix CVE-2024-39361: Update Mattermost to versions 9.9.0, 9.8.1, 9.7.5, 9.6.3, 9.5.6 or higher.
Is CVE-2024-39361 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-39361 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-39361?
CVE-2024-39361 affects Mattermost Mattermost.
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