ACF Extended Advanced Custom Fields Extended PRO Plugin up to 0.9.2.6 on WordPress Render Field render_field code injection

Summaryinfo

A vulnerability marked as critical has been reported in ACF Extended Advanced Custom Fields Extended PRO Plugin up to 0.9.2.6. The affected element is the function render_field of the component Render Field. Performing a manipulation results in code injection. This vulnerability is identified as CVE-2026-120534. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in ACF Extended Advanced Custom Fields Extended PRO Plugin up to 0.9.2.6. It has been classified as critical. This affects the function render_field of the component Render Field. The manipulation with an unknown input leads to a code injection vulnerability. CWE is classifying the issue as CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at wordfence.com. This vulnerability is uniquely identified as CVE-2026-120534 since 11/02/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/03/2026). MITRE ATT&CK project uses the attack technique T1059 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• ACF Extended

Name

• Advanced Custom Fields Extended PRO Plugin

Version

• 0.9.2.0
• 0.9.2.1
• 0.9.2.2
• 0.9.2.3
• 0.9.2.4
• 0.9.2.5
• 0.9.2.6

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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