CVE-2023-43754

Permalink previews displayed for posts in archived channels even if users are disallowed to view archived channels

Description

Mattermost fails to check whether the  “Allow users to view archived channels”  setting is enabled during permalink previews display, allowing members to view permalink previews of archived channels even if the “Allow users to view archived channels” setting is disabled. 

Remediation

Solution:

  • Update Mattermost Server to versions 9.0.2, 9.1.1, 7.8.13, 8.1.4 or higher.

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.27%
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-2023-43754?
CVE-2023-43754 has been scored as a medium severity vulnerability.
How to fix CVE-2023-43754?
To fix CVE-2023-43754: Update Mattermost Server to versions 9.0.2, 9.1.1, 7.8.13, 8.1.4 or higher.
Is CVE-2023-43754 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-43754 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-2023-43754?
CVE-2023-43754 affects Mattermost Mattermost.
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