Mattermost Focalboard Vulnerabilities

Mattermost Focalboard vulnerabilities.

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3 April 2026

File Ownership Validation Flaw in Focalboard by Mattermost
CVE-2026-28736
MattermostFocalboard4.3MEDIUM
Second-Order SQL Injection Vulnerability in Focalboard by Mattermost
CVE-2026-25773
MattermostFocalboard8.1HIGH