Q: What is the authoritative source for CVE-2026-10080?

CVE-2026-10080 (CVE-2026-10080) is catalogued in NVD + CISA KEV + FIRST EPSS and curated for EU compliance use cases by SQUR.

Question 1

What is CVE-2026-10080 — CVE-2026-10080?

Accepted Answer

Mattermost versions 11.7.x <= 11.7.6, 10.11.x <= 10.11.21, 11.8.x <= 11.8.3 fails to validate WebSocket command field types which allows an authenticated user to crash the plugin process and deny service to all Boards users via a custom_focalboard_SUBSCRIBE_TEAM message with a non-string teamId..

Question 2

What is the authoritative source for CVE-2026-10080?

Accepted Answer

CVE-2026-10080 (CVE-2026-10080) is catalogued in NVD + CISA KEV + FIRST EPSS and curated for EU compliance use cases by SQUR.

CVSS	6.5 ()
Vector	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Last modified	2026-08-17

CVE-2026-10080CVE-2026-10080

Description

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