Advanced Custom Fields: Extended PRO <= 0.9.2.6 — Unauthenticated Remote Code Execution via Dynamic Render Field Type
CVE-2026-120534Published · Updated Action summary
Affected: ≤0.9.2.6Update to 0.9.2.7 or newer
All remediation steps- Severity
- Critical9.8
- CVSS
- 9.8CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:HConfidentiality- High
I:HIntegrity- High
A:HAvailability- High
- Weakness
- CWE-434 Arbitrary File Upload
- Required access
- No account needed
- Exploit prediction (EPSS)
- 0.3% chance in 30 days24th percentile
- CISA KEV
- Not listed
On this page8
Am I affected?
Advanced Custom Fields: Extended PRO acf-extended-pro
- Affected≤ 0.9.2.6
- Patched in0.9.2.7
Update to 0.9.2.7 or newer.
You are affected if you run ≤ 0.9.2.6. Version 0.9.2.7 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Advanced Custom Fields: Extended PRO.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 0.9.2.7, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Advanced Custom Fields: Extended PRO to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Tin Pham (TF1T), Trong Pham (dtro), Hao Ngo.
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.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Advanced Custom Fields: Extended PRO
All 5| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.3 | Unauthenticated Arbitrary Non-Admin Account Takeover 0.9.2.7 – 0.9.2.7Update to 0.9.2.8 | CVE-2026-94262 | |
| Medium6.4 | 0.9.2.7 - Authenticated (Contributor+) Stored Cross-Site Scripting 0.8.9.4 – 0.9.2.7Update to 0.9.2.8 | CVE-2026-94264 | |
| Critical9.8 | Unauthenticated Privilege Escalation via Account Takeover 0.9.2.7 – 0.9.2.7Update to 0.9.2.8 | CVE-2026-94268 | |
| Critical9.8 | Unauthenticated Remote Code Execution <0.9.2.8Update to 0.9.2.8 | CVE-2026-94267 |
- High7.3Unauthenticated Arbitrary Non-Admin Account Takeover
0.9.2.7 – 0.9.2.7Update to 0.9.2.8
- Medium6.40.9.2.7 - Authenticated (Contributor+) Stored Cross-Site Scripting
0.8.9.4 – 0.9.2.7Update to 0.9.2.8
- Critical9.8Unauthenticated Privilege Escalation via Account Takeover
0.9.2.7 – 0.9.2.7Update to 0.9.2.8
- Critical9.8Unauthenticated Remote Code Execution
<0.9.2.8Update to 0.9.2.8
Same weakness (Arbitrary File Upload)
All Arbitrary File Upload| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header | CVE-2026-120688 | |
| Critical9.8 | Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission | CVE-2026-125055 | |
| Critical9.8 | Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter | CVE-2026-119077 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'search' Parameter | CVE-2026-121518 |
- High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup
≤5.25.25Update to 5.26.45
- Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder
≤1.0.2Update to 1.1
- Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System
≤3.3.9Update to 3.4.0
- Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce
≤5.127.0Update to 5.128.0
Timeline
CVE published
Severity critical, CVSS 9.8
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- EPSS
- Exploit Prediction Scoring System by FIRST.org.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.