Description
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.
References10
- plugins.trac.wordpress.org/browser/popup-maker/tags/1.22.0/clas…
- plugins.trac.wordpress.org/browser/popup-maker/tags/1.22.0/clas…
- plugins.trac.wordpress.org/browser/popup-maker/tags/1.22.0/clas…
- plugins.trac.wordpress.org/browser/popup-maker/tags/1.22.0/dist…
- plugins.trac.wordpress.org/browser/popup-maker/tags/1.23.0/clas…
- plugins.trac.wordpress.org/browser/popup-maker/tags/1.23.0/clas…
- plugins.trac.wordpress.org/browser/popup-maker/tags/1.23.0/clas…
- plugins.trac.wordpress.org/browser/popup-maker/tags/1.23.0/dist…
- plugins.trac.wordpress.org/changeset/3690634/popup-maker/trunk/…
- plugins.trac.wordpress.org/changeset?reponame=&new=3690634%40po…
Metrics
- CVSS 3.1
-
6.4
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N - EPSS — exploit probability
- 0% percentile: 39 · as of 8 November 2026
- CWE
- CWE-79
Could this be exploited in your environment?
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