Vulnerability in Mattermost

CVE-2023-3581

Mattermost fails to properly validate the origin of a websocket connection allowing a MITM attacker on Mattermost to access the websocket APIs.

EPSS: 0.003 (17.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Mattermost — versions 0, 7.8.7, 7.9.5
Mattermost Mattermost_server

Weakness classification (CWE)

CWE-346 — Origin Validation Error

References

responsibledisclosure@mattermost.com (Vendor Advisory)

Frequently asked questions

What is CVE-2023-3581?: CVE-2023-3581 is a medium-severity vulnerability in Mattermost, classified under Origin Validation Error. CVSS score: 6.2/10. Published 2023-07-17.
How severe is CVE-2023-3581?: Medium severity. CVSS v3 base score is 6.2 out of 10.