CVE-2023-6696: popup builder Auth Bypass — Fix

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.

Is your site exposed to CVE-2023-6696?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

8.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Weakness Type (CWE)

CWE-862 Missing Authorization

Affected Products

Vendor	Product	Versions
sygnoos	popup_builder	< 4.3.2

References

Advisories & Patches

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

Frequently Asked Questions

What is CVE-2023-6696? +

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. It has a CVSS v3.1 base score of 8.1 (HIGH).

How severe is CVE-2023-6696? +

CVE-2023-6696 has a CVSS v3.1 score of 8.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2023-6696? +

CVE-2023-6696 affects products from sygnoos, specifically: popup_builder. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-6696? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-40570

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.213, the `load_customer_info` action in `POST /conversation/ajax` …

CVE-2026-48127

Frappe is a full-stack web application framework. Prior to 16.20.0 and 15.110.0, users without write access could attach files to …

CVE-2026-42317

GLPI is a free asset and IT management software package. Starting in version 0.78 and prior to versions 10.0.25 and …

CVE-2026-4881

In affected versions of Octopus Server, permissions were not checked correctly resulting in any authenticated user being able to make …

CVE-2026-40543

SOPlanning does not enforce authorization for backup functionalities. An unauthenticated attacker can directly query backup-related endpoints and retrieve backup archives …

CVE-2026-10831

A denial-of-service vulnerability exists in NPort devices because of improper access control on the command port. The command interface does …

CVE-2023-6696