In a separate post, we discussed vague claims of a cross-site request forgery (CSRF) vulnerability being in the latest version of the plugin Kraken.io Image Optimizer. What we quickly found while reviewing the plugin was that there is at least a CSRF vulnerability that allows changing the plugin’s settings in the current version of the plugin.

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This post provides insights on a vulnerability in the WordPress plugin Kraken.io Image Optimizer 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.

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Plugin Security Scorecard Grade for Kraken.io Image Optimizer

Checked on March 24, 2025

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