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TI-2026-08616 Aliases CVE-2026-9842GHSA-xwxr-p855-gjc3

Backstage <= 1.4.2 - Unauthenticated Privilege Escalation via Permissive Demo Role Capabilities

Priority LOW 39CWE-269Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Privilege escalation
Confidentiality · integrity · availability
None · High · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-269.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0045 39th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
pixelgradeBackstage – Customizer Demo Accessup to 1.4.2—No fix listedCNA
  • Backstage – Customizer Demo Access Vendorpixelgrade Affected up to 1.4.2 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-9842
  2. 2026-10-03 Alias added: GHSA-xwxr-p855-gjc3

References

Other 3

  • TI-2022-04269 PixCodes < 2.3.7 - Contributor+ Stored XSS in Shortcode CVSS 3.1MEDIUM 5.4
  • TI-2025-22309 WordPress Category Icon plugin <= 1.0.3 - XML External Entity (XXE) vulnerability CVSS 3.1CRITICAL 9.1
  • TI-2023-24456 WordPress PixFields Plugin <= 0.7.0 is vulnerable to Cross Site Request Forgery (CSRF) CVSS 3.1HIGH 8.8
  • TI-2023-24455 WordPress Comments Ratings Plugin <= 1.1.7 is vulnerable to Cross Site Request Forgery (CSRF) CVSS 3.1HIGH 8.8
  • TI-2023-12343 WordPress Customify Plugin <= 2.10.4 is vulnerable to Cross Site Request Forgery (CSRF) CVSS 3.1HIGH 8.8
  • TI-2023-10797 WordPress PixTypes Plugin <= 1.4.14 is vulnerable to Cross Site Request Forgery (CSRF) CVSS 3.1HIGH 8.8
See all 19 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences