What is CVE-2026-54091?

CVE-2026-54091 is a high-severity vulnerability in Filebrowser, classified under Incorrect Authorization. CVSS score: 7.5/10. Published 2026-06-25.

How severe is CVE-2026-54091?

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

Auth bypass in Filebrowser

CVE-2026-54091

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.6, File Browser's public share handlers rebase the share owner's filesystem root to the…

Vulnerability class: Broken Access Control

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 < 2.63.6

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-54091?: CVE-2026-54091 is a high-severity vulnerability in Filebrowser, classified under Incorrect Authorization. CVSS score: 7.5/10. Published 2026-06-25.
How severe is CVE-2026-54091?: High severity. CVSS v3 base score is 7.5 out of 10.