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.

References

Share

1 affected software package

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

Did you know Wordfence Intelligence provides free personal and commercial API access to our comprehensive WordPress vulnerability database, along with a free webhook integration to stay on top of the latest vulnerabilities added and updated in the database? Get started today!

Learn more

Want to get notified of the latest vulnerabilities that may affect your WordPress site?
Install Wordfence on your site today to get notified immediately if your site is affected by a vulnerability that has been added to our database.

Get Wordfence

The Wordfence Intelligence WordPress vulnerability database is completely free to access and query via API. Please review the documentation on how to access and consume the vulnerability data via API.

Documentation