Drupal – Critical Arbitrary PHP code execution Vulnerability
The Drupal project uses the PEAR Archive_Tar library. The PEAR Archive_Tar library has released a security update that impacts Drupal. For more information please see:
Multiple vulnerabilities are possible if Drupal is configured to allow .tar
, .tar.gz
, .bz2
, or .tlz
file uploads and processes them.
To mitigate this issue, prevent untrusted users from uploading .tar
, .tar.gz
, .bz2
, or .tlz
files.
This is a different issue than SA-CORE-2019-012. Similar configuration changes may mitigate the problem until you are able to patch.Solution:
Install the latest version:
- If you are using Drupal 9.0, update to Drupal 9.0.9
- If you are using Drupal 8.9, update to Drupal 8.9.10
- If you are using Drupal 8.8 or earlier, update to Drupal 8.8.12
- If you are using Drupal 7, update to Drupal 7.75
Versions of Drupal 8 prior to 8.8.x are end-of-life and do not receive security coverage.

Duncan is a technology professional with over 20 years experience of working in various IT roles. He has a interest in cyber security, and has a wide range of other skills in radio, electronics and telecommunications.