Advanced Custom Fields: Extended PRO <= 0.9.2.6 - Unauthenticated Remote Code Execution via Dynamic Render Field Type
| CVSS | 9.8 (Critical) |
|---|---|
| Publicly Published | September 14, 2026 |
| Last Updated | September 14, 2026 |
| Researchers |
Tin Pham (TF1T)
Trong Pham (dtro) Hao Ngo |
Description
The Advanced Custom Fields: Extended PRO plugin for WordPress is vulnerable to Limited Code Injection in all versions up to, and including, 0.9.2.6 via the render_field function. This is due to insufficient validation of form configuration parameters before merging into field settings and passing to call_user_func_array in the render_field method. This makes it possible for unauthenticated attackers to call arbitrary WordPress functions with controlled arguments. Method 1 requires the administrator to enable the non-default 'shortcode_preview' setting for the target form, while Method 2 requires the server environment to lack OpenSSL functions, causing ACF Pro's acf_decrypt to fall back to unverified base64 decoding.
Learn more about Arbitrary File Upload vulnerabilities and how to prevent them.
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Vulnerability Details for Advanced Custom Fields: Extended PRO
| Software Type | Plugin |
|---|---|
| Software Slug | acf-extended-pro |
| Patched? | Yes |
| Remediation | Update to version 0.9.2.7, or a newer patched version |
| Affected Version |
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| Patched Version |
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