Popup Builder <= 3.63 - Unauthenticated Stored Cross-Site Scripting

8.3
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2020-10196
CVSS 8.3 (High)
Publicly Published March 12, 2020
Last Updated January 22, 2024
Researcher Ram - Wordfence

Description

An XSS vulnerability in the popup-builder plugin before 3.64.1 for WordPress allows remote attackers to inject arbitrary JavaScript into existing popups via an unsecured ajax action in com/classes/Ajax.php. It is possible for an unauthenticated attacker to insert malicious JavaScript in several of the popup's fields by sending a request to wp-admin/admin-ajax.php with the POST action parameter of sgpb_autosave and including additional data in an allPopupData parameter, including the popup's ID (which is visible in the source of the page in which the popup is inserted) and arbitrary JavaScript which will then be executed in the browsers of visitors to that page. Because the plugin functionality automatically adds script tags to data entered into these fields, this injection will typically bypass most WAF applications.

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 3.64.1, or a newer patched version
Affected Version
  • <= 3.63
Patched Version
  • 3.64.1

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 <= 4.2.2 - Unauthenticated Stored Cross-Site Scripting CVE-2023-6000 6.1 Marc-Alexandre Montpas December 11, 2023

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