After the plugin Related Posts was closed on Saturday we noted it has a very serious settings change vulnerability that leads to persistent cross-scripting (XSS). Something we have been interested in with recent likely to be exploitable vulnerabilities, like that one, is having a better understanding of if these are fluke security issues in the plugins or if the security of the plugins is rather poor in general. What we have been seeing is that the plugins have fallen in the latter category, but we are also seeing is that these developers seem to be making coding mistakes and not doing testing of the functionality they are changing, which should flagged those mistakes for them.

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This post provides insights on a vulnerability in the WordPress plugin Related Posts 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.

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