Thursday, Dec 15th, 2022
Advisory ID: 
Security risk: 
Moderately Critical
Access bypass
Versions affected: 
  • File (Field) Paths versions v1.x-1.0.1 and prior

The File (Field) Paths module extends the default functionality of Backdrop's core File module, by adding the ability to use entity-based tokens in destination paths and file names.

The module's default configuration could temporarily expose private files to anonymous visitors.

Important note: to fix the problem, database updates must be run in addition to updating the module.

It's possible to make a configuration change to mitigate this problem in the admin UI at /admin/config/media/file-system/filefield-paths - the temp file location should use either the temporary:// or private:// stream wrapper if uploaded files should not be exposed publicly.

This vulnerability is mitigated by the fact that an attacker must be able to guess the temporary path used for file upload.


Upgrade your site to the most recent version of the File (Field) Paths module. Download available on the File (Field) Paths 1.x-1.0.2 release page

Reported By: 
Fixed By: 
Coordinated By: 

Security email list

Backdrop maintains a security mailing list. Whenever a security release comes out, an email will be sent to everyone subscribed to that list, announcing the new release. Please follow the steps below to join the Security email list.

  1. Log in to
  2. Edit your profile
  3. Switch to the "Subscriptions" tab
  4. Check the box labeled "Security updates"
  5. Save the form