What is CVE-2026-35606?

CVE-2026-35606 is a high-severity vulnerability in Filebrowser, classified under Missing Authorization. CVSS score: 7.5/10. Published 2026-04-07.

How severe is CVE-2026-35606?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Filebrowser

CVE-2026-35606

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.1, the resourceGetHandler in http/resource.go returns full text file content without checking the Perm.Download permission flag. All three other content-serving endpoints (/api/raw, /api/preview, /api/subtitle) correctly verify this permission before serving content. A user with download: false can read any text file within their scope through two bypass paths. This vulnerability is fixed in 2.63.1.

Vulnerability class: Broken Access Control

EPSS: 0.003 (19.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Filebrowser — versions < 2.63.1

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-35606?: CVE-2026-35606 is a high-severity vulnerability in Filebrowser, classified under Missing Authorization. CVSS score: 7.5/10. Published 2026-04-07.
How severe is CVE-2026-35606?: High severity. CVSS v3 base score is 7.5 out of 10.