Project: 
Drupal core
Date: 
2020-June-17
Security risk: 
Critical 17∕25 AC:Complex/A:None/CI:All/II:All/E:Theoretical/TD:Uncommon
Vulnerability: 
Arbitrary PHP code execution
Affected versions: 
>= 8.0.0 <8.8.8 || >= 8.9.0 <8.9.1 || >=9.0.0 <9.0.1
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:

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: