Medium

CVE-2026-9278: Security Advisory

CVE-2026-9278 CVSS 5.4
Who it affects
The Form Builder CP WordPress plugin before 1.2.47 does not properly sanitize a form configuration value before storing it and using it as part of a client-side script execution, allowing authenticated users with Editor-level access and above to perform Stored Cross-Site Scripting attacks against any visitor of a page rendering the affected form, even when the `unfiltered_html` capability is disallowed (e.g.
What to do
Apply the vendor's update in your next patch window.
Deploy the fix with Action1AutomoxManageEngine Patch Manager PlusManageEngine Endpoint Central Are you exposed? Compare patch tools →

CVE-2026-9278 is a medium-severity vulnerability (CVSS 5.4).

Summary

The Form Builder CP WordPress plugin before 1.2.47 does not properly sanitize a form configuration value before storing it and using it as part of a client-side script execution, allowing authenticated users with Editor-level access and above to perform Stored Cross-Site Scripting attacks against any visitor of a page rendering the affected form, even when the unfiltered_html capability is disallowed (e.g. in a multisite network).

Why MSPs should care

This vulnerability references tracked vendors: level.

Remediation

Apply the vendor’s update during your next patch window and verify exposure. Patch-management tools that can deploy and verify the fix include Action1, Automox, ManageEngine Patch Manager Plus, ManageEngine Endpoint Central. See our best patch management ranking.

Sources

Data as of June 16, 2026. Sources: nvd.nist.gov, wpscan.com. Figures are pulled from public vendor and security data and refreshed automatically.