CVE-2026-32760 File Browser Self Registration Grants Any User Admin Access When Default Permissions Include Admin
Unauthenticated users can gain admin privileges if self-registration is enabled with admin permissions in defaults, allowing full system control.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-32760?
CVE-2026-32760 is a critical vulnerability in filebrowser, published on 19 Mar 2026. An attacker can exploit it over the internet without logging in, 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. In versions 2.61.2 and below, any unauthenticated visitor can register a full administrator account when self-registration (signup = true) is enabled and the default user permissions have perm.admin = true. The signup handler blindly applies all default settings (including Perm.Admin) to the new user without any server-side guard that strips admin from self-registered accounts. The signupHandler is supposed to create unprivileged accounts for new visitors. It contains no explicit user.Perm.Admin = false reset after applying defaults. If an administrator (intentionally or accidentally) configures defaults.perm.admin = true and also enables signup, every account created via the public registration endpoint is an administrator with full control over all files, users, and server settings. This issue has been resolved in version 2.62.0.
Which versions are affected by CVE-2026-32760?
4 open source packages ship an affected version, including github.com/filebrowser/filebrowser/v2 and github.com/filebrowser/filebrowser. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/filebrowser/filebrowser/v2 Go | All versions | 2.62.0 |
github.com/filebrowser/filebrowser/v2 Go | All versions | 2.62.0 |
github.com/filebrowser/filebrowser/v2 Go | All versions | 2.62.0 |
github.com/filebrowser/filebrowser Go | All versions | None |
Products include Filebrowser Filebrowser.
How do I fix CVE-2026-32760?
Upgrade github.com/filebrowser/filebrowser/v2 to 2.62.0 or later.
Is CVE-2026-32760 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-32760 exists.
Other vulnerabilities in filebrowser
- 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
- CVE-2026-35604 File Browser share links remain accessible after Share/Download permissions are revoked
Sources
Also known as GHSA-5gg9-5g7w-hm73, GO-2026-4710.