One of the changelog entries for the latest version of Grid Kit is “Security & performance improvements”. Looking at the changes made in that version we saw that various user input was now validated or sanitized. The lack of that at least previously led to a reflected cross-site scripting (XSS) vulnerability.

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This post provides insights on a vulnerability in the WordPress plugin Grid Kit 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.

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