Note by Patchstack

The plugin is closed on the WordPress plugins repository, but the patched version is available on the GitHub - https://github.com/pixelgrade/pixfields/releases/tag/0.7.1

While this vulnerability can be initiated by the role shown in "Required Privilege", successful exploitation requires a privileged user to perform an action — such as clicking a malicious link, visiting a crafted page, or submitting a form.

This could allow a malicious actor to force higher privileged users to execute unwanted actions under their current authentication.

CVSS score is a way to evaluate and rank reported vulnerabilities in a standardized and repeatable way but which is not ideal for WordPress.

Update to version 0.7.1 or later to resolve the vulnerability. Patchstack users can turn on auto-update for vulnerable plugins only.