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Vulnerability record · CVE-2026-4326 · published 9 April 2026

CVE-2026-4326: Missing authorization vulnerability

The Vertex Addons for Elementor plugin for WordPress is vulnerable to Missing Authorization in all versions up to and including 1.6.4. This is due to improper authorization enforcement in the activate_required_plugins() function. Specifically, the current_user_can('install_plugins') capability check does not terminate execution when it fails — it only sets an error message variable while allowing the plugin installation and activation code to execute. The error response is only sent after the installation and activation have already completed. This makes it possible for authenticated attackers, with Subscriber-level access and above, to install and activate arbitrary plugins from the WordPress.

8.8 CVSS 3.1 High EPSS 0.82% · top 44.4% CWE-862 · Missing authorization Deferred
8.8CVSS 3.1 base score
0.82%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
10References
24 Jul 2026Last modified by NVD

Description

The Vertex Addons for Elementor plugin for WordPress is vulnerable to Missing Authorization in all versions up to and including 1.6.4. This is due to improper authorization enforcement in the activate_required_plugins() function. Specifically, the current_user_can('install_plugins') capability check does not terminate execution when it fails — it only sets an error message variable while allowing the plugin installation and activation code to execute. The error response is only sent after the installation and activation have already completed. This makes it possible for authenticated attackers, with Subscriber-level access and above, to install and activate arbitrary plugins from the WordPress.

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/addons-for-elementor-builder/tags/1.6.4/app/Ajax.php#L229
https://plugins.trac.wordpress.org/browser/addons-for-elementor-builder/tags/1.6.4/app/Ajax.php#L232
https://plugins.trac.wordpress.org/browser/addons-for-elementor-builder/tags/1.6.4/app/Ajax.php#L264
https://plugins.trac.wordpress.org/browser/addons-for-elementor-builder/tags/1.6.4/app/Ajax.php#L278
https://plugins.trac.wordpress.org/browser/addons-for-elementor-builder/trunk/app/Ajax.php#L229
https://plugins.trac.wordpress.org/browser/addons-for-elementor-builder/trunk/app/Ajax.php#L232
https://plugins.trac.wordpress.org/browser/addons-for-elementor-builder/trunk/app/Ajax.php#L264
https://plugins.trac.wordpress.org/browser/addons-for-elementor-builder/trunk/app/Ajax.php#L278
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3491143%40addons-for-elementor-builder&
https://www.wordfence.com/threat-intel/vulnerabilities/id/1bb409f0-ccbd-4dfa-b097-b29ee539daa3?source=cve

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Source: NIST National Vulnerability Database (record CVE-2026-4326), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.