Recently we had a fair amount of traffic coming to our post detailing a reflected cross-site scripting (XSS) vulnerability in the plugin Ultimate FAQ, which seemed odd since that was a minor vulnerability unlikely to be exploited. It looks like the explanation for that is that hackers are actively exploiting a persistent cross-site scripting (XSS) vulnerability in the plugin that was fixed 20 months ago. While reviewing the log files of hacked WordPress website we were cleaning over at our main business we saw repeated requests for the following URL:

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This post provides insights on a vulnerability in the WordPress plugin Ultimate FAQ 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.