CVE-2026-32761 File Browser has an Authorization Policy Bypass in its Public Share Download Flow
Authenticated users with share privileges can bypass download restrictions to exfiltrate files via public share links in File Browser.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-32761?
CVE-2026-32761 is a medium-severity missing authorization vulnerability in filebrowser, published on 19 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2026-32761?
4 open source packages ship an affected version, including https://github.com/filebrowser/filebrowser, github.com/filebrowser/filebrowser and github.com/filebrowser/filebrowser/v2. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
https://github.com/filebrowser/filebrowser Go | All versions to 2.61.0 | None |
https://github.com/filebrowser/filebrowser Go | All versions to 2.61.0 | None |
github.com/filebrowser/filebrowser Go | All versions | None |
github.com/filebrowser/filebrowser/v2 Go | All versions | 2.62.0 |
Products include Filebrowser Filebrowser.
How do I fix CVE-2026-32761?
Upgrade to a fixed version.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-32761 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-32761 exists.
Other vulnerabilities in filebrowser
- CVE-2026-32760 File Browser Self Registration Grants Any User Admin Access When Default Permissions Include Admin
- CVE-2026-29188 File Browser: TUS Delete Endpoint Bypasses Delete Permission Check
- CVE-2023-39612 Cross-site scripting in n/a
- CVE-2026-30934 FileBrowser Quantum: Stored XSS in public share page via unsanitized share metadata (text/template misuse)
- CVE-2021-46398 Cross-Site Request Forgery in Filebrowser
Sources
Also known as GHSA-68j5-4m99-w9w9, GO-2026-4738.