CVE-2026-72839

criticalCVSS 9.8covered by 1 sourcefirst seen 2026-08-13

filebrowser through 2.63.16 fails to properly restrict scope and permissions when self-signup is enabled with default CreateUserDir setting. Unauthenticated attackers can register accounts that inherit the server root scope with full create, modify, delete, rename, share, and download permissions, allowing unrestricted access to all files.

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Exploitation outlook

Low exploitation risk0.39% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 32% of all EPSS-scored CVEs.

Advisory coverage (1)

criticalCVE-2026-72839: filebrowser through 2.63.16 fails to properly restrict scope and permissions when self-signup …nvd · 2026-08-13

External references

NVD record for CVE-2026-72839

CVE.org record

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