The FunnelKit – Funnel Builder for WooCommerce Checkout plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `wfop_phone` shortcode in all versions up to, and including, 3.13.1.2. This is due to insufficient input sanitization and output escaping on the user-supplied `default` attribute. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
CVE-2025-12878 is a medium severity with CVSS 6.4 Stored Cross-Site Scripting issue affecting the Plugin FunnelKit – Funnel Builder for WooCommerce Checkout. It affects Versions up to 3.13.1.2 and is fixed in 3.13.1.3.
Use the related hub and response guides to connect this CVE-2025-12878 report with patch validation, scanner checks, and site hardening work.
Open the grouped hub for related CVEs, affected ranges, severity mix, and patch coverage.
Check access, XML-RPC exposure, backup readiness, and monitoring after patching.
Use containment, evidence capture, remediation, and validation steps when exploit risk is high.
CVE-2025-12878 is tracked for the Plugin FunnelKit – Funnel Builder for WooCommerce Checkout as medium severity with CVSS 6.4. The affected range is Versions up to 3.13.1.2. Update FunnelKit – Funnel Builder for WooCommerce Checkout to 3.13.1.3 or newer where that version is compatible with the site.
Search engines and operators need more than a title. This page exposes the identifier, affected range, patch evidence, and source coverage that make the vulnerability actionable.
This report has a CVE identifier, which makes it suitable for focused search and vulnerability triage workflows.
Affected version data gives operators a concrete comparison point against installed WordPress software.
A fixed version is present, so the page can answer update and remediation intent directly.
External references are available for source validation, advisory review, and incident notes.
Use these checks when converting this record into a patch ticket, incident note, or risk acceptance decision.
Inventory the installed Plugin package and compare its version with Versions up to 3.13.1.2.
Confirm FunnelKit – Funnel Builder for WooCommerce Checkout is updated to 3.13.1.3 or newer.
Review references and CVSS vector details for exploitability, authentication requirements, and exposure path.
After patching, re-run vulnerability monitoring and keep the related plugin or theme hub under review for follow-up CVEs.
| Software Type | Plugin |
|---|---|
| Software Slug |
funnel-builder
View on wordpress.org
|
| CVE | CVE-2025-12878 |
| Patched Versions |
3.13.1.3
|
| Affected Versions |
Versions up to 3.13.1.2
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
Funnel Builder by FunnelKit <= 3.9.0 - Unauthenticated Local File Inclusion
Funnel Builder by FunnelKit <= 3.11.1 - Unauthenticated Local File Inclusion
FunnelKit – Funnel Builder for WooCommerce Checkout <= 3.15.0.1 - Unauthenticated SQL Injection
FunnelKit – Funnel Builder for WooCommerce Checkout <= 3.13.1.5 - Unauthenticated SQL Injection
FunnelKit – Funnel Builder for WooCommerce Checkout <= 3.15.0.2 - Unauthenticated Stored Cross-Site Scripting
Funnel Builder for WordPress by FunnelKit <= 2.14.3 - Authenticated(Administrator+) SQL Injection
Funnel Builder by FunnelKit <= 3.13.1.2 - Authenticated (Contributor+) Stored Cross-Site Scripting
Funnel Builder for WordPress by FunnelKit – Customize WooCommerce Checkout Pages, Create Sales Funnels, Order Bumps & One Click Upsells <= 3.3.1 - Authenticated (Author+) Stored Cross-Site Scripting via SVG Upload
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