Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/backstage/tags/1.4.2/includes/class-B
- https://plugins.trac.wordpress.org/browser/backstage/tags/1.4.2/includes/class-B
- https://www.wordfence.com/threat-intel/vulnerabilities/id/5bcf1f02-0946-4e96-a81
FAQ
What is CVE-2026-9842?
CVE-2026-9842 is a vulnerability with a CVSS score of 7.5 (HIGH). 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` ...
How severe is CVE-2026-9842?
CVE-2026-9842 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-9842?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.