This post provides the details of a vulnerability in the WordPress plugin Email Subscribers & Newsletters 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 its contents are limited to subscribers of our service. If you are not currently a subscriber, you can try out the service for free and then you can view the contents of the post. There are a lot of other reason that you will want to sign up beyond access to posts like this one, including that you would have already been warned about this vulnerability if your website was vulnerable due to it.
In monitoring the WordPress Support Forum for indications of vulnerabilities in plugins so that we can warn our customers of any publicly known security issues in plugins they use we have been seeing for sometime complaints about about problems with bogus signups on subscriber lists for newsletter plugins. It isn’t clear what the point of that would be or it is even intentional (if some knows what the explanation for that is please leave a comment). One of those plugins being, Email Subscribers & Newsletters, where someone began a topic seven weeks ago with this:
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