CVE-2026-27543 PUBLISHED

WordPress MStore API plugin <= 4.20.0 - Privilege Escalation vulnerability

Assigner: Patchstack
Reserved: 20.02.2026 Published: 13.08.2026 Updated: 13.08.2026

Unauthenticated Privilege Escalation in MStore API <= 4.20.0 versions.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 8.1

Product Status

Vendor FluxBuilder
Product MStore API
Versions Default: unaffected
  • affected from n/a to 4.20.0 (incl.)

Solutions

Update the WordPress MStore API plugin to the latest available version (at least 4.21.0).

Credits

  • Taylsec | Patchstack Bug Bounty Program finder

References

Problem Types

  • CWE-266 Incorrect Privilege Assignment CWE

Impacts

  • CAPEC-233 Privilege Escalation