What is CVE-2026-7184?

CVE-2026-7184 is a medium-severity vulnerability in Mattermost, classified under Insertion of Sensitive Information into Sent Data. CVSS score: 6.5/10. Published 2026-06-12.

How severe is CVE-2026-7184?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Mattermost

CVE-2026-7184

Mattermost versions 11.6.x <= 11.6.1, 11.5.x <= 11.5.4, 10.11.x <= 10.11.15 fail to sanitize the Remote Cluster API response on PATCH operations, which allows authenticated users with the {{manage_secure_connections}} permission to obtain…

EPSS: 0.003 (17.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Mattermost — versions 11.6.0, 11.5.0, 10.11.0
Mattermost Mattermost_server

Weakness classification (CWE)

CWE-201 — Insertion of Sensitive Information into Sent Data

References

responsibledisclosure@mattermost.com (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-7184?: CVE-2026-7184 is a medium-severity vulnerability in Mattermost, classified under Insertion of Sensitive Information into Sent Data. CVSS score: 6.5/10. Published 2026-06-12.
How severe is CVE-2026-7184?: Medium severity. CVSS v3 base score is 6.5 out of 10.