What is CVE-2024-42406?

CVE-2024-42406 is a medium-severity vulnerability in Mattermost, classified under Improper Access Control. CVSS score: 5.4/10. Published 2024-09-26.

How severe is CVE-2024-42406?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Vulnerability in Mattermost

CVE-2024-42406

Mattermost versions 9.11.x <= 9.11.0, 9.10.x <= 9.10.1, 9.9.x <= 9.9.2 and 9.5.x <= 9.5.8 fail to properly authorize requests when viewing archived channels is disabled, which allows an attacker to retrieve post and file information about archived channels. Examples are flagged or unread posts as well as files.

EPSS: 0.002 (12.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

Affected products

Mattermost — versions 9.11.0, 9.10.0, 9.9.0
Mattermost Mattermost_server — versions 9.11.0

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

responsibledisclosure@mattermost.com (Vendor Advisory)

Frequently asked questions

What is CVE-2024-42406?: CVE-2024-42406 is a medium-severity vulnerability in Mattermost, classified under Improper Access Control. CVSS score: 5.4/10. Published 2024-09-26.
How severe is CVE-2024-42406?: Medium severity. CVSS v3 base score is 5.4 out of 10.