XSS in Danieliser Popup Maker – Boost Sales, Conversions, Optins, Subscribers With The Ultimate Wp Builder
CVE-2026-87915
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 class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.005 (42.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.wordfence.com/threat-intel/vulnerabilities/id/ea8b1eee-2e3f-4d61-b815-4ea0a…
- plugins.trac.wordpress.org/browser/popup-maker/tags/1.24.0/classes/Admin/Subscr…
- plugins.trac.wordpress.org/browser/popup-maker/tags/1.24.0/classes/ListTable.php
- plugins.trac.wordpress.org/browser/popup-maker/tags/1.24.0/classes/Newsletters…
- plugins.trac.wordpress.org/browser/popup-maker/tags/1.24.0/classes/Newsletters…
- plugins.trac.wordpress.org/browser/popup-maker/tags/1.24.0/classes/Abstract/Dat…
- plugins.trac.wordpress.org/browser/popup-maker/tags/1.24.0/classes/Newsletters…
- plugins.trac.wordpress.org/changeset
- plugins.trac.wordpress.org/changeset/3690634/popup-maker/trunk/classes/Admin/Su…
Frequently asked questions
- What is CVE-2026-87915?
- CVE-2026-87915 is a high-severity vulnerability in Danieliser Popup Maker – Boost Sales, Conversions, Optins, Subscribers With The Ultimate Wp Builder, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-09-18.
- How severe is CVE-2026-87915?
- High severity. CVSS v3 base score is 7.2 out of 10.
- Is CVE-2026-87915 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.