cvedb.io
CVE-2026-28736
MEDIUM · CVSS 4.3
EPSS exploitation probability: 0%
Published 2026-04-03T14:16:29.517 · Last modified 2026-06-17T10:28:58.423

Summary

** UNSUPPORTED WHEN ASSIGNED ** Focalboard version 8.0 fails to validate file ownership when serving uploaded files. This allows an authenticated attacker who knows a victim's fileID to read the content of the file. NOTE: Focalboard as a standalone product is not maintained and no fix will be issued.

Affected products

mattermost — focalboard

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.