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Project: 
Drupal core
Date: 
2023-March-15
Security risk: 
Moderately critical 14∕25 AC:None/A:None/CI:Some/II:None/E:Theoretical/TD:Default
Vulnerability: 
Information Disclosure
Affected versions: 
>=8.0.0 <9.4.12 || >=9.5.0 <9.5.5 || >=10.0.0 <10.0.5
Description: 

The Media module does not properly check entity access in some circumstances. This may result in users seeing thumbnails of media items they do not have access to, including for private files.

This release was coordinated with SA-CONTRIB-2023-010.

This advisory is not covered by Drupal Steward.

Solution: 

Install the latest version:

If you are using Drupal 10.0, update to Drupal 10.0.5.
If you are using Drupal 9.5, update to Drupal 9.5.5.
If you are using Drupal 9.4, update to Drupal 9.4.12.

All versions of Drupal 9 prior to 9.4.x are end-of-life and do not receive security coverage. Note that Drupal 8 has reached its end of life.

Drupal 7 core does not include the Media Library module and therefore is not affected.

Reported By: 
James Williams
Dan Flanagan
Fixed By: 
Lee Rowlands of the Drupal Security Team
James Williams
Jess of the Drupal Security Team
Dave Long of the Drupal Security Team
Dan Flanagan
Jen Lampton Provisional Member of the Drupal Security Team
Joseph Zhao Provisional Member of the Drupal Security Team
Benji Fisher of the Drupal Security Team

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