XSS in Mattermost

CVE-2023-7113

Mattermost version 8.1.6 and earlier fails to sanitize channel mention data in posts, which allows an attacker to inject markup in the web client.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (21.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N.

Affected products

Mattermost — versions 0, 8.1.7, 9.2.0
Mattermost Mattermost_server

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

responsibledisclosure@mattermost.com (Vendor Advisory)

Frequently asked questions

What is CVE-2023-7113?: CVE-2023-7113 is a low-severity vulnerability in Mattermost, classified under Cross-site Scripting. CVSS score: 3.7/10. Published 2023-12-29.
How severe is CVE-2023-7113?: Low severity. CVSS v3 base score is 3.7 out of 10.