CVE-2026-9842

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 v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://plugins.trac.wordpress.org/browser/backstage/tags/1.4.2/includes/class-Backstage.php#L154
https://plugins.trac.wordpress.org/browser/backstage/tags/1.4.2/includes/class-Backstage.php#L348
https://www.wordfence.com/threat-intel/vulnerabilities/id/5bcf1f02-0946-4e96-a81b-00c7c48d64b3?source=cve

Configurations

No configuration.

History

08 Jul 2026, 05:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-08 05:16

Updated : 2026-07-08 14:55

NVD link : CVE-2026-9842

Mitre link : CVE-2026-9842

CVE.ORG link : CVE-2026-9842

JSON object : View

Products Affected

No product.

CWE

CWE-269

Improper Privilege Management

{"id": "CVE-2026-9842", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-9842", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-08T13:00:54.003774Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security@wordfence.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security@wordfence.com", "affectedData": [{"vendor": "pixelgrade", "product": "Backstage \u2013 Customizer Demo Access", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "1.4.2"}], "defaultStatus": "unaffected"}]}], "published": "2026-07-08T05:16:29.097", "references": [{"url": "https://plugins.trac.wordpress.org/browser/backstage/tags/1.4.2/includes/class-Backstage.php#L154", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/backstage/tags/1.4.2/includes/class-Backstage.php#L348", "source": "security@wordfence.com"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/5bcf1f02-0946-4e96-a81b-00c7c48d64b3?source=cve", "source": "security@wordfence.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security@wordfence.com", "description": [{"lang": "en", "value": "CWE-269"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-07-08T14:55:07.843", "sourceIdentifier": "security@wordfence.com"}