CVE-2026-32761 PUBLISHED

File Browser has an Authorization Policy Bypass in its Public Share Download Flow

Assigner: GitHub_M
Reserved: 13.03.2026 Published: 19.03.2026 Updated: 19.03.2026

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Versions 2.61.0 and below contain a permission enforcement bypass which allows users who are denied download privileges (perm.download = false) but granted share privileges (perm.share = true) to exfiltrate file content by creating public share links. While the direct raw download endpoint (/api/raw/) correctly enforces the download permission, the share creation endpoint only checks Perm.Share, and the public download handler (/api/public/dl/<hash>) serves file content without verifying that the original file owner has download permission. This means any authenticated user with share access can circumvent download restrictions by sharing a file and then retrieving it via the unauthenticated public download URL. The vulnerability undermines data-loss prevention and role-separation policies, as restricted users can publicly distribute files they are explicitly blocked from downloading directly. This issue has been fixed in version 2.62.0.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS Score: 6.5

Product Status

Vendor filebrowser
Product filebrowser
Versions
  • Version < 2.62.0 is affected

References

Problem Types

  • CWE-284: Improper Access Control CWE
  • CWE-639: Authorization Bypass Through User-Controlled Key CWE
  • CWE-863: Incorrect Authorization CWE