CVE-2023-6547

Playbooks access/modification by removed team member

Description

Mattermost fails to validate team membership when a user attempts to access a playbook, allowing a user with permissions to a playbook but no permissions to the team the playbook is on to access and modify the playbook. This can happen if the user was once a member of the team, got permissions to the playbook and was then removed from the team. 

Remediation

Solution:

  • Update Mattermost Server to versions 8.1.6, 9.2.2 or higher.

Category

3.7
CVSS
Severity: Low
CVSS 3.1 •
EPSS 0.21%
Vendor Advisory mattermost.com
Affected: Mattermost Mattermost
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2023-6547?
CVE-2023-6547 has been scored as a low severity vulnerability.
How to fix CVE-2023-6547?
To fix CVE-2023-6547: Update Mattermost Server to versions 8.1.6, 9.2.2 or higher.
Is CVE-2023-6547 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-6547 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-2023-6547?
CVE-2023-6547 affects Mattermost Mattermost.
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