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.

INFO

Published Date :

2026-04-03T13:25:53.399Z

Last Modified :

2026-04-03T14:54:37.869Z

Source :

Mattermost
AFFECTED PRODUCTS

The following products are affected by CVE-2026-28736 vulnerability.

Vendors Products
Mattermost
  • Focalboard
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-28736.

URL Resource
https://github.com/mattermost-community/focalboard cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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