CVE-2023-3582

Lack of channel membership check when linking a board to a channel

Description

Mattermost fails to verify channel membership when linking a board to a channel allowing a low-privileged authenticated user to link a Board to a private channel they don't have access to, 

Remediation

Solution:

  • Update Mattermost Server to versions v7.8.7, v7.9.5, v7.10.3 or higher.

Category

4.3
CVSS
Severity: Medium
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-2023-3582?
CVE-2023-3582 has been scored as a medium severity vulnerability.
How to fix CVE-2023-3582?
To fix CVE-2023-3582: Update Mattermost Server to versions v7.8.7, v7.9.5, v7.10.3 or higher.
Is CVE-2023-3582 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-3582 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-2023-3582?
CVE-2023-3582 affects Mattermost Mattermost.
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