Authorization Bypass Through User-Controlled Key Affecting github.com/mattermost/focalboard/server package, versions >=0.6.0
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-GITHUBCOMMATTERMOSTFOCALBOARDSERVER-16072991
- published15 Apr 2026
- disclosed3 Apr 2026
- creditUnknown
Introduced: 3 Apr 2026
CVE-2026-28736 (opens in a new tab)How to fix?
There is no fixed version for github.com/mattermost/focalboard/server.
Overview
Affected versions of this package are vulnerable to Authorization Bypass Through User-Controlled Key via the file content endpoint. An attacker can access files belonging to other users by supplying a valid file identifier associated with the target user's files.
Note:
Vendor's statement: Focalboard as a standalone product is not maintained and no fix will be issued.