CVE-2026-32760: File Browser Vulnerability Allows Unauthenticated Admin Account Creation
Summary
CVE-2026-32760: File Browser Signup Grants Admin When Default Permissions Include Admin. Affects github.com/filebrowser/filebrowser/v2 versions < 2.62.0. Fixed in 2.62.0. How to fix ↓
Also tracked for
The same CVE-2026-32760 is tracked separately for each ecosystem and vendor. Its fix information is the same; the package and affected versions differ.
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Background
File Browser is an open-source file management tool that allows users to manage files on a server through a web interface. It provides features such as file uploads, downloads, sharing, and user management. However, a critical vulnerability has been identified that allows unauthenticated users to register as administrators if certain default permissions are set.
Vulnerability Detail
The vulnerability arises from the self-registration feature of File Browser, which, when enabled, allows any unauthenticated visitor to create a full administrator account. This occurs when the default user permissions include admin rights (perm.admin = true). The signup handler does not implement any server-side checks to prevent the assignment of admin privileges to newly registered users, leading to severe security risks. An attacker can exploit this vulnerability to gain full control over the server, including access to all files, user management, and server settings.
How To Fix
Latest published version: v2.63.23 as of 22 Oct 2026
go get github.com/filebrowser/filebrowser/v2@v2.63.23Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.
If you need the minimum change
2.62.0
This is the first release that contains the fix.
go get github.com/filebrowser/filebrowser/v2@v2.62.0Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, disable the self-registration feature by setting 'signup = false' in the settings until the package is updated. This can be done by sending a PUT request to the settings API with the following JSON payload: {"signup": false}.
Conclusion
The CVE-2026-32760 vulnerability in File Browser poses a significant security risk by allowing unauthenticated users to create admin accounts. It is crucial to update to the patched version or disable the self-registration feature to mitigate this risk.
See every vulnerability recorded for github.com/filebrowser/filebrowser/v2 →
FAQ
CVE-2026-32760 is a critical vulnerability in File Browser that allows unauthenticated users to register as administrators if default permissions grant admin rights.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.
An attacker can gain full control over the server, access all files, manage users, and change server settings, leading to potential data breaches and unauthorized access.
Update the package to version 2.62.0 or later using the command: 'go get github.com/filebrowser/filebrowser/v2@v2.62.0'.
Disable the self-registration feature by setting 'signup = false' in the settings to prevent unauthorized account creation until you can update.
References
Related vulnerabilities
Recent vulnerabilities recorded for github.com/filebrowser/filebrowser/v2.
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