https://www.bleepingcomputer.com/news/security/magento-urges-users-to-apply-security-update-for-rce-bug/

Magento's Security Team urged users to install the latest released security update to protect their stores from exploitation attempts trying to abuse a recently reported remote code execution (RCE) vulnerability.

The issue is impacting Magento Commerce 2.3.1 and Magento Commerce 2.3.2 were security-only patch 2.3.2-p2 was not installed, as well as unsupported versions of Page Builder, such as Page Builder Beta.