What is GHSA-vph7-r229-qxpf?

GHSA-vph7-r229-qxpf is a security advisory published by GitHub Security Advisories with Medium severity. Focalboard doesn't validate file ownership when serving uploaded files

Which CVE IDs does GHSA-vph7-r229-qxpf cover?

GHSA-vph7-r229-qxpf covers the following CVE IDs: CVE-2026-28736. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-vph7-r229-qxpf?

GHSA-vph7-r229-qxpf has a CVSS v3 base score of 4.3, published by GitHub Security Advisories.

Which products are affected by GHSA-vph7-r229-qxpf?

GHSA-vph7-r229-qxpf affects 1 product, including: go/github.com/mattermost/focalboard:\u003c= 7.10.6.

GHSA-vph7-r229-qxpfMediumCVSS 4.3

Focalboard doesn't validate file ownership when serving uploaded files

Vendor

GitHub Security Advisories

Published

April 3, 2026

Last Modified

April 6, 2026

🔗 CVE IDs covered (1)

CVE-2026-28736 →

📋 Description

** 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 products1

go/github.com/mattermost/focalboard:<= 7.10.6

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-28736
https://github.com/mattermost-community/focalboard
https://github.com/advisories/GHSA-vph7-r229-qxpf