---
id: CVE-2026-94267
title: >-
  Advanced Custom Fields: Extended < 0.9.2.8 - Unauthenticated RCE via Front-End
  Post Update Action
summary: >-
  The Advanced Custom Fields: Extended WordPress plugin before 0.9.2.8, Advanced
  Custom Fields: Extended PRO WordPress plugin before 0.9.2.8 does not perform
  any capability check when updating a post through one of its front-end form
  actio…
severity: critical
cvss: 9
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H'
cvssSource: adp
cwe:
  - CWE-94
product: 'Advanced Custom Fields: Extended'
affected:
  - advanced_custom_fields_extended < 0.9.2.8
  - advanced_custom_fields_extended_pro < 0.9.2.8
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-23T10:35:48.325320Z'
published: '2026-10-23'
updated: '2026-10-23'
sourceUpdated: '2026-10-23T10:46:02.628Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-94267'
references:
  - url: 'https://wpscan.com/vulnerability/9c8f45c1-cd85-4a9c-be77-88801d8143ce/'
tags:
  - cve.org
ingestedAt: '2026-10-23T06:17:25.168Z'
---

## Overview

The Advanced Custom Fields: Extended WordPress plugin before 0.9.2.8, Advanced Custom Fields: Extended PRO WordPress plugin before 0.9.2.8 does not perform any capability check when updating a post through one of its front-end form actions, allowing unauthenticated visitors to overwrite arbitrary posts, including the ones in which the site stores its own field definitions, which in turn leads to arbitrary code execution on the server. Exploitation requires the site to publish a form whose post-update action maps both its target and its content to visitor-submitted values.

## Affected

- `advanced_custom_fields_extended < 0.9.2.8`
- `advanced_custom_fields_extended_pro < 0.9.2.8`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.