CVE-2026-87915highCWE-79

CVE-2026-87915: high-severity vulnerability in danieliser Popup Maker – Boost Sales…

Popup Maker <= 1.24.0 - Unauthenticated Stored Cross-Site Scripting via values[Name] Parameter

Published

Follow this CVE+ Monitor Popup Maker – Boost Sales, Conversions, Optins, Subscribers with the Ultimate WP Popup Builder

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

41Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 7.2epss 0.5%
from disclosure to weapon4 days
Published on NVDSep 18
1st PoC+4d
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Affected products
danieliser · Popup Maker – Boost Sales, Conversions, Optins, Subscribers with the Ultimate WP Popup Builder
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — danieliser Popup Maker – Boost Sales…

In the same product, most dangerous first.

CVE-2026-8848HIGHPopup Maker – Boost Sales, Conversions, Optins, Subscribers with the Ultimate WP Popup Builder <= 1.22.0 - Missing Authorization to Authenticated (Editor+) Arbitrary Plugin InstallationEPSS 1.2%CVE-2026-15797MEDIUMPopup Maker <= 1.24.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via post_titleEPSS 0.4%CVE-2024-2336MEDIUMPopup Maker – Popup for opt-ins, lead gen, & more <= 1.18.2 - Authenticated (Contributor+) Stored Cross-Site ScriptingEPSS 0.3%CVE-2024-10583MEDIUMPopup Maker – Boost Sales, Conversions, Optins, Subscribers with the Ultimate WP Popups Builder <= 1.20.2 - Authenticated (Contributor+) Stored Cross-Site ScriptingEPSS 0.3%CVE-2024-7054MEDIUMPopup Maker <= 1.19.0 - Authenticated (Contributor+) Stored Cross-Site ScriptingEPSS 0.3%CVE-2025-4205MEDIUMPopup Maker <= 1.20.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via popupID ParameterEPSS 0.3%