What is CVE-2023-6547?

CVE-2023-6547 is a low-severity vulnerability in Mattermost, classified under Improper Access Control. CVSS score: 3.7/10. Published 2023-12-12.

How severe is CVE-2023-6547?

Low severity. CVSS v3 base score is 3.7 out of 10.

Is CVE-2023-6547 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Mattermost

CVE-2023-6547

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.

EPSS: 0.003 (24.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N.

Affected products

Mattermost — versions 0, 8.1.6, 9.2.2
Mattermost Mattermost_server

Weakness classification (CWE)

CWE-284 — Improper Access Control

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

responsibledisclosure@mattermost.com (Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2023-6547?: CVE-2023-6547 is a low-severity vulnerability in Mattermost, classified under Improper Access Control. CVSS score: 3.7/10. Published 2023-12-12.
How severe is CVE-2023-6547?: Low severity. CVSS v3 base score is 3.7 out of 10.
Is CVE-2023-6547 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.