CVE-2024-39807

Channel IDs of archived/restored channels leaked via webhook events

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.

Remediation

Solution:

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

Category

3.1
CVSS
Severity: Low
CVSS 3.1 •
EPSS 0.05%
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-2024-39807?
CVE-2024-39807 has been scored as a low severity vulnerability.
How to fix CVE-2024-39807?
To fix CVE-2024-39807: Update Mattermost to versions 9.9.0, 9.8.1, 9.5.6 or higher.
Is CVE-2024-39807 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-39807 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-2024-39807?
CVE-2024-39807 affects Mattermost Mattermost.
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