The flaw could have let attackers send out custom newsletters and delete newsletter subscribers from 200,000 affected websites.
Developers of a plugin, used by WordPress websites for building pop-up ads for newsletter subscriptions, have issued a patch for a serious flaw. The vulnerability could be exploited by attackers to send out newsletters with custom content, or to delete or import newsletter subscribers.
The plugin in question is Popup Builder – Responsive WordPress Pop up…
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