Security Advisory

CVE-2026-6517

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-06-15 13:55:25

Last updated 2026-06-15 16:00:00

Assigner Mattermost

CVSS score 6.3

State PUBLISHED

Description

Mattermost Desktop App versions <=6.1 5.5.13.0 fail to restrict the allow list of domains to which NTLM credentials were forwarded to in the Mattermost Desktop App which allows any user on a server without the image proxy enabled to intercept other users credentials via embedding an image that routes to an external web server. Mattermost Advisory ID: MMSA-2026-00651

← Browse all CVEs View on cve.org ↗