Popup Builder – Create highly converting, mobile friendly marketing popups. <= 4.4.1 - Authenticated (Contributor+) Stored Cross-Site Scripting
Vulnerability Description
The Popup Builder – Create highly converting, mobile friendly marketing popups. plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'sg_popup' shortcode in all versions up to, and including, 4.4.1 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2025-9856
Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Naoya Takahashi
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/beb6b26a-3fe1-44e0-9fda-97b288abf735?source=cve
- https://plugins.trac.wordpress.org/browser/popup-builder/tags/4.4.0/com/helpers/AdminHelper.php#L438
- https://plugins.trac.wordpress.org/browser/popup-builder/tags/4.4.0/com/classes/popups/SGPopup.php#L1368
- https://plugins.trac.wordpress.org/changeset/3384281
More from popupbuilder
View All →Affected Vendor
popupbuilder
View all reports →