The Premium Addons for KingComposer plugin for WordPress is vulnerable to unauthorized modification and loss of data in versions up to, and including, 1.1.1. This is due to missing authorization and capability checks on the add_custom_sidebar() and remove_custom_sidebar() AJAX handlers, both of which are exposed through wp_ajax_nopriv_* hooks and write directly to the octagon_custom_sidebar option via update_option(). This makes it possible for unauthenticated attackers to create arbitrary custom widget areas or delete existing custom sidebars, which can cause widgets assigned to those areas to silently lose their registration and stop rendering.
History

Wed, 01 Jul 2026 11:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 01 Jul 2026 10:30:00 +0000

Type Values Removed Values Added
First Time appeared Octagonwebstudio
Octagonwebstudio premium Addons For Kingcomposer
Wordpress
Wordpress wordpress
Vendors & Products Octagonwebstudio
Octagonwebstudio premium Addons For Kingcomposer
Wordpress
Wordpress wordpress

Tue, 30 Jun 2026 06:00:00 +0000

Type Values Removed Values Added
Description The Premium Addons for KingComposer plugin for WordPress is vulnerable to unauthorized modification and loss of data in versions up to, and including, 1.1.1. This is due to missing authorization and capability checks on the add_custom_sidebar() and remove_custom_sidebar() AJAX handlers, both of which are exposed through wp_ajax_nopriv_* hooks and write directly to the octagon_custom_sidebar option via update_option(). This makes it possible for unauthenticated attackers to create arbitrary custom widget areas or delete existing custom sidebars, which can cause widgets assigned to those areas to silently lose their registration and stop rendering.
Title Premium Addons for KingComposer <= 1.1.1 - Missing Authorization to Unauthenticated Arbitrary Custom Sidebar Creation and Deletion via 'add_custom_sidebar' and 'remove_custom_sidebar' AJAX actions
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published: 2026-06-30T04:30:18.137Z

Updated: 2026-07-01T10:32:07.111Z

Reserved: 2026-06-15T20:28:31.078Z

Link: CVE-2026-12349

cve-icon Vulnrichment

Updated: 2026-07-01T10:31:16.763Z

cve-icon NVD

No data.

cve-icon Redhat

No data.