Popup Builder <= 4.2.2 - Unauthenticated Stored Cross-Site Scripting

6.1
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2023-6000
CVSS 6.1 (Medium)
Publicly Published December 11, 2023
Last Updated January 22, 2024
Researcher Marc-Alexandre Montpas

Description

The Popup Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via popups in versions up to 4.2.3 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.

Learn more about Cross-Site Scripting vulnerabilities and how to prevent them.

References

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Vulnerability Details for Popup Builder – Create highly converting, mobile friendly marketing popups.

Software Type Plugin
Software Slug popup-builder (view on wordpress.org)
Patched? Yes
Remediation Update to version 4.2.3, or a newer patched version
Affected Version
  • < 4.2.3
Patched Version
  • 4.2.3

Recent vulnerabilities in Popup Builder – Create highly converting, mobile friendly marketing popups.

# Title CVE ID CVSS Researchers Date
1 Popup Builder - Create highly converting, mobile friendly marketing popups. <= 4.4.2 - Improper Authorization to Unauthenticated Subscriber Removal via Predictable Tokens CVE-2025-13079 5.3 Rafshanzani Suhada February 18, 2026
2 Popup Builder – Create highly converting, mobile friendly marketing popups. <= 4.4.1 - Authenticated (Contributor+) Stored Cross-Site Scripting CVE-2025-9856 6.4 Naoya Takahashi (nakko) December 12, 2025
3 Popup Builder <= 4.3.4 - Authenticated (Admin+) Stored Cross-Site Scripting CVE-2024-9428 4.4 Dmitrii Ignatyev November 21, 2024
4 Popup Builder <= 4.3.6 - Sensitive Information Exposure via Imported Subscribers CSV File CVE-2024-2541 5.3 Tim Coen August 28, 2024
5 Popup Builder <= 4.3.0 - Missing Authorization in Multiple AJAX Actions CVE-2024-2544 7.4 Alex Thomas June 14, 2024
6 Popup Builder – Create highly converting, mobile friendly marketing popups <= 4.3.1 - Missing Authorization and Nonce Exposure CVE-2023-6696 8.1 Lucio Sá June 14, 2024
7 Popup Builder <= 4.2.7 - Authenticated(Contributor+) Stored Cross-Site Scripting via Custom JS CVE-2024-2506 6.4 Tim Coen May 31, 2024
8 Popup Builder <= 4.2.6 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode CVE-2024-30184 6.4 LVT-tholv2k March 25, 2024
9 Popup Builder <= 4.2.5 - Authenticated (Admin+) Server-Side Request Forgery CVE-2023-6294 5.5 Sebastian Neef January 17, 2024
10 Popup Builder <= 4.2.1 - Authenticated (Admin+) Stored Cross-Site Scripting CVE-2023-3226 4.4 Dipak Panchal (th3.d1p4k) August 28, 2023

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