Project: 
Date: 
2020-June-17
Vulnerability: 
Arbitrary PHP code execution
CVE IDs: 
CVE-2020-13664
Description: 
Drupal 8 and 9 have a remote code execution vulnerability under certain circumstances.
An attacker could trick an administrator into visiting a malicious site that could result in creating a carefully named directory on the file system. With this directory in place, an attacker could attempt to brute force a remote code execution vulnerability.
Windows servers are most likely to be affected.
Solution: 
Install the latest version:
- If you are using Drupal 8.8.x, upgrade to Drupal 8.8.8.
 - If you are using Drupal 8.9.x, upgrade to Drupal 8.9.1.
 - If you are using Drupal 9.0.x, upgrade to Drupal 9.0.1.
 
Versions of Drupal 8 prior to 8.8.x are end-of-life and do not receive security coverage. Sites on 8.7.x or earlier should update to 8.8.8.
Reported By: 
Fixed By: 
- Jess of the Drupal Security Team
 - Samuel Mortenson of the Drupal Security Team
 - Peter Wolanin of the Drupal Security Team
 - Lorenzo G
 - Lee Rowlands of the Drupal Security Team
 - Greg Knaddison of the Drupal Security Team
 - Cash Williams of the Drupal Security Team
 - Heine of the Drupal Security Team
 - Drew Webber of the Drupal Security Team
 - Alex Pott of the Drupal Security Team
 - Gábor Hojtsy