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Vulnerability record · CVE-2026-1720 · published 5 March 2026

CVE-2026-1720: Missing authorization vulnerability

The WowOptin: Next-Gen Popup Maker – Create Stunning Popups and Optins for Lead Generation plugin for WordPress is vulnerable to unauthorized arbitrary plugin installation due to a missing capability check on the 'install_and_active_plugin' function in all versions up to, and including, 1.4.24. This makes it possible for authenticated attackers, with Subscriber-level access and above, to install and activate arbitrary plugins.

8.8 CVSS 3.1 High EPSS 0.28% · top 82.0% CWE-862 · Missing authorization Deferred
8.8CVSS 3.1 base score
0.28%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

Description

The WowOptin: Next-Gen Popup Maker – Create Stunning Popups and Optins for Lead Generation plugin for WordPress is vulnerable to unauthorized arbitrary plugin installation due to a missing capability check on the 'install_and_active_plugin' function in all versions up to, and including, 1.4.24. This makes it possible for authenticated attackers, with Subscriber-level access and above, to install and activate arbitrary plugins.

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

References

LinkTags
https://plugins.trac.wordpress.org/browser/optin/trunk/includes/utils/class-notice.php#L848
https://plugins.trac.wordpress.org/changeset/3456826/
https://www.wordfence.com/threat-intel/vulnerabilities/id/ee0c0e29-b117-4480-b5b7-995878af8c57?source=cve

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Source: NIST National Vulnerability Database (record CVE-2026-1720), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.