What is CVE-2023-1774?

CVE-2023-1774 is a medium-severity vulnerability in Mattermost, classified under Missing Authorization. CVSS score: 4.2/10. Published 2023-03-31.

How severe is CVE-2023-1774?

Medium severity. CVSS v3 base score is 4.2 out of 10.

Auth bypass in Mattermost

CVE-2023-1774

When processing an email invite to a private channel on a team, Mattermost fails to validate the inviter's permission to that channel, allowing an attacker to invite themselves to a private channel.

Vulnerability class: Broken Access Control

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

CVSS v3 metric

CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N.

Affected products

Mattermost — versions 0, 7.7.2, 7.8.0
Mattermost Mattermost_server — versions 7.7.1

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

responsibledisclosure@mattermost.com (Vendor Advisory)

Frequently asked questions

What is CVE-2023-1774?: CVE-2023-1774 is a medium-severity vulnerability in Mattermost, classified under Missing Authorization. CVSS score: 4.2/10. Published 2023-03-31.
How severe is CVE-2023-1774?: Medium severity. CVSS v3 base score is 4.2 out of 10.