In short
- CVE-2026-28736 is a MEDIUM (CVSS 4.3) vulnerability affecting github.com/mattermost/focalboard, focalboard (mattermost).
- Chance of exploitation in the next 30 days (EPSS): 0.23%, higher than 13.8% of all vulnerabilities.
- No patched version is listed yet: follow the vendor's advisory in References.
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.
NVD 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.
More vulnerabilities in github.com/mattermost/focalboard
See all →Running one of these products? Scan your site to see whether it exposes a vulnerable version.
Scan my site free