CVE-2024-3897: Popup Box – Best WordPress Popup Plugin <= 4.3.6 - Missing Authorization to Information Exposure

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-05-02 · updated 2026-06-17
Weakness: CWE-862

Description

The Popup Box – Best WordPress Popup Plugin plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the ays_pb_create_author AJAX action in all versions up to, and including, 4.3.6. This makes it possible for unauthenticated attackers to enumerate all emails registered on the website.

Affected products

Ays Pro Popup box: through 4.3.6

References

https://plugins.trac.wordpress.org/changeset/3073593/ays-popup-box/tags/4.3.7/admin/class-ays-pb-admin.php?old=3072088&old_path=ays-popup-box%2Ftags%2F4.3.6%2Fadmin%2Fclass-ays-pb-admin.php
https://www.wordfence.com/threat-intel/vulnerabilities/id/e71e3624-ccda-4c9c-90e9-e557dd19b644?source=cve
https://plugins.trac.wordpress.org/changeset/3073593/ays-popup-box/tags/4.3.7/admin/class-ays-pb-admin.php?old=3072088&old_path=ays-popup-box%2Ftags%2F4.3.6%2Fadmin%2Fclass-ays-pb-admin.php
https://www.wordfence.com/threat-intel/vulnerabilities/id/e71e3624-ccda-4c9c-90e9-e557dd19b644?source=cve

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