What is CVE-2023-1775?

CVE-2023-1775 is a medium-severity vulnerability in Mattermost, classified under Information Disclosure. CVSS score: 4.3/10. Published 2023-03-31.

How severe is CVE-2023-1775?

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

Information disclosure in Mattermost

CVE-2023-1775

When running in a High Availability configuration, Mattermost fails to sanitize some of the user_updated and post_deleted events broadcast to all users, leading to disclosure of sensitive information to some of the users with currently connected Websocket clients.

Vulnerability class: Information Disclosure

EPSS: 0.005 (42.6th 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 3.3.0, 7.8.0, 7.7.2
Mattermost Mattermost_server — versions 7.7.1

Weakness classification (CWE)

References

responsibledisclosure@mattermost.com (Vendor Advisory)

Frequently asked questions

What is CVE-2023-1775?: CVE-2023-1775 is a medium-severity vulnerability in Mattermost, classified under Information Disclosure. CVSS score: 4.3/10. Published 2023-03-31.
How severe is CVE-2023-1775?: Medium severity. CVSS v3 base score is 4.3 out of 10.