CVE-2026-120534
Advanced Custom Fields: Extended PRO <= 0.9.2.6 - Unauthenticated Remote Code Execution via Dynamic Render Field Type
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| Advanced Custom Fields: Extended PRO ACF Extended |
≥ 0; ≤ 0.9.2.6 (affected, semver)
Other versions: unaffected |
CNA: Wordfence |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 9.8 critical |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | CNA: Wordfence |
| 3.1 / 9.8 critical |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD: [email protected] |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/b8a7a925-2b9e-43bc-b649-c7ec518e063c?source=cveCNA: Wordfence
- https://www.acf-extended.com/changelogCNA: Wordfence
- https://www.acf-extended.com/changelog[email protected]
- https://www.wordfence.com/threat-intel/vulnerabilities/id/b8a7a925-2b9e-43bc-b649-c7ec518e063c?source=cve[email protected]
For agents and automation
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