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Project: 
Drupal core
Date: 
2022-July-20
Security risk: 
Moderately critical 11∕25 AC:Complex/A:User/CI:Some/II:Some/E:Theoretical/TD:Uncommon
Vulnerability: 
Multiple vulnerabilities
Description: 

The Media oEmbed iframe route does not properly validate the iframe domain setting, which allows embeds to be displayed in the context of the primary domain. Under certain circumstances, this could lead to cross-site scripting, leaked cookies, or other vulnerabilities.

This advisory is not covered by Drupal Steward.

Solution: 

Install the latest version:

If you are using Drupal 9.4, update to Drupal 9.4.3.
If you are using Drupal 9.3, update to Drupal 9.3.19.

All versions of Drupal 9 prior to 9.3.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 module and therefore is not affected.

Reported By: 
Heine of the Drupal Security Team
Fixed By: 
Lee Rowlands of the Drupal Security Team
Alex Pott of the Drupal Security Team
Samuel Mortenson
xjm of the Drupal Security Team
Heine of the Drupal Security Team
Joseph Zhao, provisional member of the Drupal Security Team
Vijay Mani, provisional member of the Drupal Security Team
Alex Bronstein of the Drupal Security Team
Neil Drumm of the Drupal Security Team
Benji Fisher, provisional member of the Drupal Security Team
Jen Lampton, provisional member of the Drupal Security Team
Dave Long, provisional member of the Drupal Security Team

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