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CVE-2026-75588

2.6 low SSVC exploitation: none Analyzed
NVD · CVE.org

Mattermost Desktop App versions <=6.2 6.2.2.0 fail to validate the URL scheme when checking whether a target URL is internal to the connected server, which allows a network-positioned attacker to load a plugin popout window over an insecure connection via a link using a downgraded URL scheme. Mattermost Advisory ID: MMSA-2026-00717

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 2.6 · mattermostNVD modified 2026-10-13 12:02

Affected (CPE criteria) 1

  • cpe:2.3:a:mattermost:mattermost_desktop:*:*:*:*:*:*:*:*

References 1