cve.bz

CVE-2026-7184

6.5 mediumEPSS 0.3%

Medium (6.5) in mattermost mattermost server. EPSS 0.3% chance of exploitation in the next 30 days. Fixed in github.com/mattermost/mattermost-server 10.11.16, 10.11.16+incompatible, 11.5.5.

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 remote cluster authentication tokens via a PATCH request to the remote cluster endpoint.. Mattermost Advisory ID: MMSA-2026-00662

Severity

CVSS 3.1

6.5 medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS
0.3% chance of exploitation in the next 30 days; higher than 17% of CVEs (scores of 2026-10-31)
CWE
CWE-201
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-9p44-r552-4wp9Gogithub.com/mattermost/mattermost-server>=11.6.0 <11.6.111.6.1
GHSA-9p44-r552-4wp9Gogithub.com/mattermost/mattermost-server>=11.5.0 <11.5.511.5.5
GHSA-9p44-r552-4wp9Gogithub.com/mattermost/mattermost-server>=10.11.0 <10.11.1610.11.16
GHSA-9p44-r552-4wp9Gogithub.com/mattermost/mattermost/server/v8>=8.0.0-20250731163400-5b955468ea1e <8.0.0-20260428142921-bd8fc92226728.0.0-20260428142921-bd8fc9222672
GO-2026-6282Gogithub.com/mattermost/mattermost-server>=10.11.0+incompatible <10.11.16+incompatible
>=11.5.0+incompatible <11.5.5+incompatible
>=11.6.0+incompatible <11.6.1+incompatible		10.11.16+incompatible, 11.5.5+incompatible, 11.6.1+incompatible
GO-2026-6282Gogithub.com/mattermost/mattermost-server/v5all versionsno fix published
GO-2026-6282Gogithub.com/mattermost/mattermost-server/v6all versionsno fix published
GO-2026-6282Gogithub.com/mattermost/mattermost/server/v8>=8.0.0-20250731163400-5b955468ea1e <8.0.0-20260428142921-bd8fc92226728.0.0-20260428142921-bd8fc9222672

References

Check your stackJSON