CVE-2023-47858

Details of archived public channels are leaked to members of another team

Description

Mattermost fails to properly verify the permissions needed for viewing archived public channels,  allowing a member of one team to get details about the archived public channels of another team via the GET /api/v4/teams/<team-id>/channels/deleted endpoint.

Remediation

Solution:

  • Update Mattermost Server to versions 8.1.7, 9.0.5, 9.1.4, 9.2.3 or higher.

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.14%
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-2023-47858?
CVE-2023-47858 has been scored as a medium severity vulnerability.
How to fix CVE-2023-47858?
To fix CVE-2023-47858: Update Mattermost Server to versions 8.1.7, 9.0.5, 9.1.4, 9.2.3 or higher.
Is CVE-2023-47858 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-47858 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-2023-47858?
CVE-2023-47858 affects Mattermost Mattermost.
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