Reported vulnerability
Advanced Custom Fields: Extended PRO <= 0.9.2.6 - Unauthenticated Remote Code Execution via Dynamic Render Field Type
Published 14 Sept 2026
Updated 14 Sept 2026
Compare your installed software with the affected versions below. Follow the source’s remediation guidance and test an available update after taking a backup. A database entry describes a reported issue; it does not establish whether a particular website has been compromised.
Does this affect my version?
Check your installed version against this advisory. This compares the report’s version ranges and does not scan your website.
Wordfence advisory
critical · CVSS 9.8The 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.
Severity vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Advanced Custom Fields: Extended PRO
- Software
- plugin · acf-extended-pro
- Affected versions
- Start version unspecified, through 0.9.2.6
- Fix availability
- Fix available
- Fixed versions
- 0.9.2.7
Recommended action
Update to version 0.9.2.7, or a newer patched version
Further references (1)
Data sources and licences
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Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.
Read licence termsSource: Wordfence
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Get help with this issueQuestions about this vulnerability
Which versions of Advanced Custom Fields: Extended PRO are affected?
Wordfence lists these affected versions: Start version unspecified, through 0.9.2.6. Use the version checker above to compare your installed release with this report.
Is a fix available for Advanced Custom Fields: Extended PRO?
Wordfence reports a fix for this issue in Advanced Custom Fields: Extended PRO. It lists these fixed versions: 0.9.2.7. Back up your website and test the recommended update before applying it to your live site.
Where can I find my installed plugin version?
In WordPress, open Plugins > Installed Plugins and find the version shown beneath the plugin name.
Does an affected version mean my website has been hacked?
An affected version means the installed release matches a vulnerability described in this report. It does not show whether anyone has exploited it on your website. The checker compares version numbers with stored reports; it does not inspect your website.