What is CVE-2023-6202?

CVE-2023-6202 is a medium-severity vulnerability in Mattermost, classified under Improper Access Control. CVSS score: 4.3/10. Published 2023-11-27.

How severe is CVE-2023-6202?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Is CVE-2023-6202 known to be exploited?

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

Vulnerability in Mattermost

CVE-2023-6202

Mattermost fails to perform proper authorization in the /plugins/focalboard/api/v2/users endpoint allowing an attacker who is a guest user and knows the ID of another user to get their information (e.g. name, surname, nickname) via Mattermost Boards.

EPSS: 0.004 (36.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Mattermost — versions 0, 9.0.2, 9.1.1

Weakness classification (CWE)

CWE-284 — Improper Access Control

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

responsibledisclosure@mattermost.com (Vendor Advisory)

Frequently asked questions

What is CVE-2023-6202?: CVE-2023-6202 is a medium-severity vulnerability in Mattermost, classified under Improper Access Control. CVSS score: 4.3/10. Published 2023-11-27.
How severe is CVE-2023-6202?: Medium severity. CVSS v3 base score is 4.3 out of 10.
Is CVE-2023-6202 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.