3 Dec 2018

Vulnerability Details: Authenticated Persistent Cross-Site Scripting (XSS) in Advanced Custom Fields

The quality of vulnerability reports for WordPress plugins is often not great and a just released report on a vulnerability in the plugin Advanced Custom Fields is a great example. The only evidence presented in their report is what is claimed to be a proof of concept for the claimed vulnerability, though for a couple of reason it can’t be reused. The only textual information provided in it is about a different plugin entirely:

...


This post provides insights on a vulnerability in the WordPress plugin Advanced Custom Fields not discovered by us, where the discoverer hadn't provided the details needed for us to confirm the vulnerability while we were adding it to the data set for our service, so the rest of its contents are limited to subscribers of our service.

If you were using our service, you would have already been warned about this vulnerability if your website is vulnerable due to it. You can try out our service for free and then see the rest of the details of the vulnerability.

For existing customers, please log in to your account to view the rest of the contents of the post.


Plugin Security Scorecard Grade for Advanced Custom Fields

Checked on March 19, 2025
C+

See issues causing the plugin to get less than A+ grade

Leave a Reply

Your email address will not be published.