Path traversal in FileBrowser - CVE-2026-28492
Published: April 8, 2026
Vulnerability identifier: #VU125391
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-28492
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to path traversal in the withHashFile middleware in http/public.go when handling public share link requests for a shared directory. A remote attacker can use a public share link to browse sibling directories and download files outside the shared directory to disclose sensitive information.
This affects directory listing via /api/public/share/{hash} and file download via /api/public/dl/{hash}/path. Password-protected shares are affected after the share password is provided.
Affected software
FileBrowser
How to mitigate CVE-2026-28492
Install security update from vendor's website.
FileBrowser - update to 2.61.0