Vulnerabilities and security researches forbackstage backstage

Jul 10, 2026

CVE, Research URL: CVE-2026-9842
Home page URL: Security reports for Backstage – Customizer Demo Access
Application: Backstage – Customizer Demo Access
Date: Jul 08, 2026
Research Description: The Backstage - Customizer Demo Access plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 1.4.2. This is due to the plugin assigning the `manage_options` capability to the `backstage_customizer_user` demo role, which is more permissive than necessary for Customizer-only demo access. This makes it possible for unauthenticated attackers to navigate beyond the Customizer and update arbitrary WordPress options such as `default_role`, leading to privilege escalation.
Affected versions: max 1.4.2.
Status: vulnerable