Path traversal in FileBrowser - CVE-2026-54093
Published: June 8, 2026
Vulnerability identifier: #VU133485
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-54093
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to write arbitrary files outside the intended extraction directory on a Windows system.
The vulnerability exists due to path traversal in download-as-zip and download-as-tar archive entry name handling when processing stored filenames containing Windows-style backslash separators. A remote user can create a file with a specially crafted name and cause a victim to download and extract a crafted archive to write arbitrary files outside the intended extraction directory on a Windows system.
User interaction is required to download and extract the archive on Windows.
Affected software
FileBrowser
How to mitigate CVE-2026-54093
Install security update from vendor's website.
FileBrowser - update to 2.63.6