What’s Vulnerable › Vulnerabilities

CVE-2023-6696: Popup Builder – Create highly converting, mobile friendly marketing popups <= 4.3.1 - Missing Authorization and Nonce Exposure

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-06-15 · updated 2026-06-17
• Weakness: CWE-862

Description

The Popup Builder – Create highly converting, mobile friendly marketing popups. plugin for WordPress is vulnerable to unauthorized access of functionality due to a missing capability check on several functions in all versions up to, and including, 4.3.1. While some functions contain a nonce check, the nonce can be obtained from the profile page of a logged-in user. This allows subscribers to perform several actions including deleting subscribers and perform blind Server-Side Request Forgery.

Affected products

• Popup Builder: before 4.3.2 — fixed in 4.3.2

How to fix

Upgrade to a fixed version: Popup Builder 4.3.2. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/browser/popup-builder/tags/4.2.3/com/classes/Ajax.php
• https://plugins.trac.wordpress.org/changeset/3096000/popup-builder/trunk/com/classes/Ajax.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/9f86ec30-7a9d-4c36-8559-bde331c8b958?source=cve
• https://plugins.trac.wordpress.org/browser/popup-builder/tags/4.2.3/com/classes/Ajax.php
• https://plugins.trac.wordpress.org/changeset/3096000/popup-builder/trunk/com/classes/Ajax.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/9f86ec30-7a9d-4c36-8559-bde331c8b958?source=cve

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