{"id":"CVE-2026-9842","aliases":["EUVD-2026-42160","GHSA-xwxr-p855-gjc3"],"status":"published","title":"Backstage \u003c= 1.4.2 - Unauthenticated Privilege Escalation via Permissive Demo Role Capabilities","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.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0045,"percentile":0.39454,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269"],"published":"2026-07-08T04:30:49Z","modified":"2026-07-08T14:55:07Z","products":[{"vendor":"pixelgrade","product":"backstage – customizer demo access"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/5bcf1f02-0946-4e96-a81b-00c7c48d64b3?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/backstage/tags/1.4.2/includes/class-Backstage.php#L154"},{"url":"https://plugins.trac.wordpress.org/browser/backstage/tags/1.4.2/includes/class-Backstage.php#L348"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-9842"},{"url":"https://github.com/advisories/GHSA-xwxr-p855-gjc3"}],"sources":{"cve":[{"id":"CVE-2026-9842","title":"Backstage \u003c= 1.4.2 - Unauthenticated Privilege Escalation via Permissive Demo Role Capabilities","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.","status":"published","published":"2026-07-08T04:30:49.525Z","modified":"2026-07-08T13:01:09.142Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T13:42:37.965383Z"}],"euvd":[{"id":"EUVD-2026-42160","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.","status":"published","published":"2026-07-08T04:30:49Z","modified":"2026-07-08T13:01:09Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T18:20:11.058935Z"}],"ghsa":[{"id":"GHSA-xwxr-p855-gjc3","title":"The Backstage - Customizer Demo Access plugin for WordPress is vulnerable to Privilege Escalation...","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.","status":"published","published":"2026-07-08T06:31:35Z","modified":"2026-07-08T06:31:41Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T15:09:18.783285Z"}],"nvd":[{"id":"CVE-2026-9842","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.","status":"published","published":"2026-07-08T05:16:29.097Z","modified":"2026-07-08T14:55:07.843Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:12:28.040501Z"}]}}