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GHSA-vph7-r229-qxpf

Focalboard doesn't validate file ownership when serving uploaded files

Source: GitHub Advisory Database (reviewed) Moderate CVE-2026-28736

Packages

EcosystemPackageAffectedFixed in
Go github.com/mattermost/focalboard <= 7.10.6 no fix listed

Details

As written in the advisory (Markdown source, shown as plain text).

** 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.

References

External links from the advisory. They lead to third-party sites.