This could allow a malicious actor to directly interact with your database, including but not limited to stealing information.
CVSS score is a way to evaluate and rank reported vulnerabilities in a standardized and repeatable way but which is not ideal for WordPress.
This security issue has a low severity impact and is unlikely to be exploited.
Patchstack has issued a mitigation rule to block any attacks until an official fix becomes available, can be tested and be safely applied.
29 Mar, 2024