File Browser has an Authorization Policy Bypass in its Public Share Download Flow
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-284.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| filebrowser | filebrowser | before 2.62.0 | 2.62.0 | Patch available | CNA |
| — | https://github.com/filebrowser/filebrowser (Go) | up to 2.61.0 | — | No fix listed | GHSA-68j5-4m99-w9w9 |
- filebrowser Vendorfilebrowser Affected before 2.62.0 Fixed in 2.62.0 Patch available CNA
- https://github.com/filebrowser/filebrowser (Go) Vendor— Affected up to 2.61.0 Fixed in — No fix listed GHSA-68j5-4m99-w9w9
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:filebrowser:filebrowser:*:*:*:*:*:*:*:* | before 2.62.0 | Vulnerable | filebrowser |
- cpe:2.3:a:filebrowser:filebrowser:*:*:*:*:*:*:*:* Versions before 2.62.0 Vulnerable ·filebrowser
Remediation
- Fix · CNA filebrowser (filebrowser) Fixed in 2.62.0
Timeline
- 2026-10-02 Threatist record created from CVE-2026-32761
- 2026-10-03 Alias added: GHSA-68j5-4m99-w9w9
References
More Filebrowser vulnerabilities
- TI-2026-25251 File Browser Self Registration Grants Any User Admin Access When Default Permissions Include Admin CVSS 4.0CRITICAL 10.0
- TI-2026-23305 File Browser: TUS Delete Endpoint Bypasses Delete Permission Check CVSS 3.1CRITICAL 9.1
- TI-2026-26777 File Browser's Signup Grants Execution Permissions When Default Permissions Includes Execution CVSS 3.1CRITICAL 9.8
- TI-2025-33000 File Browser vulnerable to command execution allowlist bypass CVSS 3.1HIGH 8.1
- TI-2026-23759 FileBrowser Quantum: Stored XSS in public share page via unsanitized share metadata (text/template misuse) CVSS 3.1HIGH 8.9
- TI-2023-20699 A cross-site scripting (XSS) vulnerability in FileBrowser before v2.23.0 allows an… CVSS 3.1CRITICAL 9.0
Sources
- CVE-2026-32761 · CVE Program
- CVE-2026-32761 · NVD
- FIRST EPSS
- GHSA-68j5-4m99-w9w9 · GitHub Advisory Database · CC BY 4.0
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