CVE-2026-15797
Popup Maker <= 1.24.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via post_title
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 post_title in all versions up to, and including, 1.24.0 due to insufficient input sanitization and output escaping. 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. This requires the attacker to create a post with an HTML entity-encoded payload in the title, which bypasses sanitize_text_field on save and is later decoded and executed by the browser when rendered by the Select2 component.
| CWE | CWE-79 |
| Vendor | danieliser |
| Product | popup maker – boost sales, conversions, optins, subscribers with the ultimate wp popup builder |
| Published | Sep 18, 2026 |
| Last Updated | Sep 19, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N