Popup Maker <= 1.24.0 - Unauthenticated Stored Cross-Site Scripting via values[Name] Parameter
Summary
| CVE | CVE-2026-87915 |
|---|---|
| State | PUBLISHED |
| Assigner | Wordfence |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-09-18 10:17:07 UTC |
| Updated | 2026-09-18 15:17:17 UTC |
| 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 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. |
Risk And Classification
Primary CVSS: v3.1 7.2 HIGH from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
EPSS: 0.004730000 probability, percentile 0.400720000 (date 2026-09-18)
Problem Types: CWE-79 | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 7.2 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
| 3.1 | CNA | DECLARED | 7.2 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
ChangedConfidentiality
LowIntegrity
LowAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Danieliser | Popup Maker Boost Sales Conversions Optins Subscribers With The Ultimate WP Popup Builder | affected 1.24.0 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| plugins.trac.wordpress.org/changeset/3690634/popup-maker/trunk/classes/Admin/Subscribers... | [email protected] | plugins.trac.wordpress.org | |
| www.wordfence.com/threat-intel/vulnerabilities/id/ea8b1eee-2e3f-4d61-b815-4ea0a... | [email protected] | www.wordfence.com | |
| plugins.trac.wordpress.org/browser/popup-maker/tags/1.24.0/classes/Newsletters.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/popup-maker/tags/1.24.0/classes/ListTable.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/popup-maker/tags/1.24.0/classes/Newsletters.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/popup-maker/tags/1.24.0/classes/Newsletters.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/changeset | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/popup-maker/tags/1.24.0/classes/Admin/Subscribers/Tab... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/popup-maker/tags/1.24.0/classes/Abstract/Database.php | [email protected] | plugins.trac.wordpress.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Naoya Takahashi (nakko) (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-09-09T16:06:09.000Z | Vendor Notified |
| CNA | 2026-09-17T21:21:53.000Z | Disclosed |
There are currently no legacy QID mappings associated with this CVE.