{"id":"CVE-2026-120534","published":"2026-11-03T05:18:31.987","lastModified":"2026-11-03T05:18:32.140","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.","cvssScore":9.8,"cvssSeverity":"CRITICAL","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-434"],"vendors":[],"products":[],"references":[{"url":"https://www.acf-extended.com/changelog","tags":[]},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/b8a7a925-2b9e-43bc-b649-c7ec518e063c?source=cve","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"The Advanced Custom Fields: Extended PRO WordPress plugin allows unauthenticated attackers to call arbitrary WordPress functions via insufficient validation in the render_field method, enabling remote code execution or data exfiltration through controlled function calls.","exploitability":"Exploitation requires either enabling the non-default 'shortcode_preview' setting (Method 1) or a server lacking OpenSSL functions (Method 2), making it moderately difficult but still feasible for targeted attacks.","blast_radius":"Successful exploitation could lead to full system compromise including data theft, unauthorized code execution, and site defacement due to unauthenticated access to privileged WordPress functions.","remediation":"Upgrade to version 0.9.2.7 or later, as this is the fixed version that addresses the insufficient validation in the render_field function.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["code-injection","wordpress","unauthenticated","acf","pro"],"model":"garnet-coder","analyzedAt":"2026-11-03T09:55:19.342Z"}}