CVE Catalog

CVE-2026-87915

HighCVSS 7.2
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.47%

40th percentile - higher than 40% of all known CVEs

Summary

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 the 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.

Risk Assessment

An attacker can execute arbitrary JavaScript in the victim's browser, potentially leading to session theft, redirects, or content modification. The risk affects all users visiting infected WordPress pages.

Recommendation

Update the Popup Maker plugin to a version later than 1.24.0. Until then, consider disabling the plugin or deploying additional WAF filters.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS