MEDIUM✓ PATCH🇵🇱 Wersja polska

CVE-2026-6517

CVSS 6.3v3.1pub. 2026-06-15upd. 2026-06-16

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

CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

  • Mattermost Desktop

    APP
    Mattermost
    ≤ 5.13.06.1.0 – 6.1.5
🟢
PATCH AVAILABLE
Vendor update available. Deploy in standard maintenance cycle.
CWE
References

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