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Medium severity6.5NVD Advisory· Published Jun 15, 2026· Updated Jun 16, 2026

CVE-2026-8683

CVE-2026-8683

Description

Mattermost Desktop App versions <=6.1 5.5.13.0 fail to account for attempting to open extremely long URLs in the Mattermost Desktop App which allows a malicious server owner to crash the application via including a script to call window.open on a very large URL. Mattermost Advisory ID: MMSA-2026-00652

AI Insight

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

Affected products

4
  • Mattermost/Desktopinferred
    Range: <=5.5.13.0
  • Mattermost/Mattermost Desktop App3 versions
    cpe:2.3:a:mattermost:mattermost_desktop:*:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:a:mattermost:mattermost_desktop:*:*:*:*:*:*:*:*range: >=6.1.0,<=6.1.5
    • cpe:2.3:a:mattermost:mattermost_desktop:*:-:*:*:*:*:*:*range: <=5.13.0
    • (no CPE)range: <=6.1 5.5.13.0

Patches

Vulnerability mechanics

References

1

News mentions

0

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