How severe is CVE-2019-6340?

This vulnerability has a severity rating of HIGH with a CVSS score of 8.1 out of 10.

What type of vulnerability is CVE-2019-6340?

This is classified as CWE-502, which is a common weakness in software security.

CVE-2019-6340 - HIGH Severity | CVSS 8.1

Vulnerability Description

Some field types do not properly sanitize data from non-form sources in Drupal 8.5.x before 8.5.11 and Drupal 8.6.x before 8.6.10. This can lead to arbitrary PHP code execution in some cases. A site is only affected by this if one of the following conditions is met: The site has the Drupal 8 core RESTful Web Services (rest) module enabled and allows PATCH or POST requests, or the site has another web services module enabled, like JSON:API in Drupal 8, or Services or RESTful Web Services in Drupal 7. (Note: The Drupal 7 Services module itself does not require an update at this time, but you should apply other contributed updates associated with this advisory if Services is in use.)

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