CVE-2026-28736
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
59/100
Published: 2026-04-03
Modified: 2026-10-23
First seen: 2026-10-29
Status: active
Attack Surface
Network
Low Complexity
No Interaction
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
Low
I:
None
A:
None
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.
Weakness Classification (1)
Affected Software (1)
| Vendor | Product | Version |
|---|---|---|
| mattermost | focalboard | 8.0.0 |
References & Advisories (1)
Product