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Low severity2.6NVD Advisory· Published Sep 17, 2026· Updated Oct 13, 2026

CVE-2026-75588

CVE-2026-75588

Description

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

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

2
  • Mattermost/Mattermost Desktop App2 versions
    cpe:2.3:a:mattermost:mattermost_desktop:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:mattermost:mattermost_desktop:*:*:*:*:*:*:*:*range: >=6.2.0,<6.2.3
    • (no CPE)range: <=6.2.2.0

Patches

Vulnerability mechanics

References

1

News mentions

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