Shortcode Execution Vulnerability in Advanced Custom Fields Plugins by DeliciousBrains
CVE-2026-94263

4.8MEDIUM

Key Information:

Vendor

WordPress
Status
Advanced Custom Fields: Extended
Advanced Custom Fields: Extended Pro
Vendor
CVE Published:
23 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-94263?

The Advanced Custom Fields: Extended and Extended PRO plugins for WordPress versions 0.9.2.4 to 0.9.2.7 have a vulnerability that arises from inconsistent disabling of shortcode processing in confirmation messages of front-end forms. This flaw exposes the server to arbitrary shortcode execution by unauthenticated users who submit a form without the necessary security settings enabled. Consequently, attackers could exploit this vulnerability to run malicious code on the server.

Affected Version(s)

Advanced Custom Fields: Extended 0.9.2.4 < 0.9.2.8

Advanced Custom Fields: Extended PRO 0.9.2.4 < 0.9.2.8

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-94263 - Proof of Concept

References

https://wpscan.com/vulnerability/52f1633a-21ae-4273-8f24-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Karthik Ramakrishnan
WPScan
.