{"cve":"CVE-2026-12349","nvd":{"published":"2026-06-30T06:16:26.950","modified":"2026-07-01T11:16:24.393","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","score":5.3},"cwes":["CWE-862"],"references":["https://plugins.trac.wordpress.org/browser/premium-addons-for-kingcomposer/trunk/core/class-sidebar.php#L100","https://plugins.trac.wordpress.org/browser/premium-addons-for-kingcomposer/trunk/core/class-sidebar.php#L23","https://plugins.trac.wordpress.org/browser/premium-addons-for-kingcomposer/trunk/core/class-sidebar.php#L68","https://plugins.trac.wordpress.org/browser/premium-addons-for-kingcomposer/trunk/core/class-sidebar.php#L77","https://plugins.trac.wordpress.org/browser/premium-addons-for-kingcomposer/trunk/core/class-sidebar.php#L92"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:41:17.107060303+00:00"},"epss":{"cve":"CVE-2026-12349","score":0.00416,"percentile":0.35919,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}