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Popup-Builder vulnerability results
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WordPress Popup Builder 3.49 Persistent Cross-Site Scripting

WordPress Popup Builder 3.49 contains a persistent cross-site scripting vulnerability that allows authenticated attackers to inject malicious scripts by breaking out of option tags in the post_title parameter. Attackers can submit crafted POST requests to the post.php endpoint with script payloads in the post_title field that execute when pages or posts display popup selections.

CWE-79Jun 4, 2026
CVSS5.1v4.0EPSS0.171%PoCs1SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX