Authorization Bypass Through User-Controlled Key Affecting github.com/mattermost/mattermost-plugin-boards/server/app package, versions <9.2.4
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-GOLANG-GITHUBCOMMATTERMOSTMATTERMOSTPLUGINBOARDSSERVERAPP-16873786
- published24 May 2026
- disclosed22 May 2026
- crediteahmed
Introduced: 22 May 2026
CVE-2026-3473 Â (opens in a new tab)How to fix?
Upgrade github.com/mattermost/mattermost-plugin-boards/server/app to version 9.2.4 or higher.
Overview
Affected versions of this package are vulnerable to Authorization Bypass Through User-Controlled Key via the Boards API when file ownership and access control are not properly validated. An attacker can gain unauthorized access to and download files belonging to other users or teams by sending crafted API requests with valid file IDs.