Vulnerability in Popup Maker – Boost Sales, Conversions, Optins, Subscribers with the Ultimate WP Popup Builder — CVE-2026-87915

What to do now

Update Popup Maker – Boost Sales, Conversions, Optins, Subscribers with the Ultimate WP Popup Builder to 1.25.0 or later.

Affected versions

• Everything up to and including 1.24.0

The Popup Maker – Boost Sales, Conversions, Optins, Subscribers with the Ultimate WP Popup Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via values[Name] Parameter in all versions up to, and including, 1.24.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The wp_kses sanitization applied on output is insufficient in this context because HTML entities within allowed attribute values survive normalization intact and are later evaluated by the jQuery(link.attr('href')) sink in wp-admin/js/common.js when a contextual help tab anchor is clicked.

This description is reproduced verbatim from the public vulnerability record.

• https://www.wordfence.com/threat-intel/vulnerabilities/id/ea8b1eee-2e3f-4d61-b815-4ea0aaa188b5?source=api-prod

Part of this record comes from Wordfence Intelligence. Original: https://www.wordfence.com/threat-intel/vulnerabilities/id/ea8b1eee-2e3f-4d61-b815-4ea0aaa188b5
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