Advanced Custom Fields Extended Plugin up to 0.9.2.7 on WordPress Shortcode injection

Summaryinfo

A vulnerability classified as critical has been found in Advanced Custom Fields Extended Plugin and Advanced Custom Fields Extended PRO Plugin up to 0.9.2.7. The impacted element is an unknown function of the component Shortcode Handler. This manipulation causes injection. This vulnerability is handled as CVE-2026-94263. The attack can be initiated remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Advanced Custom Fields Extended Plugin and Advanced Custom Fields Extended PRO Plugin up to 0.9.2.7 and classified as critical. Affected by this vulnerability is some unknown processing of the component Shortcode Handler. The manipulation with an unknown input leads to a injection vulnerability. The CWE definition for the vulnerability is CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The Advanced Custom Fields: Extended and Advanced Custom Fields: Extended PRO WordPress plugins from 0.9.2.4 to 0.9.2.7 do not consistently disable shortcode processing in the confirmation message of their front-end forms, allowing unauthenticated visitors to have arbitrary shortcodes executed server-side when they submit a form whose stored configuration does not carry the relevant setting.

The advisory is shared at wpscan.com. This vulnerability is known as CVE-2026-94263 since 09/21/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1055 for this issue.

Upgrading to version 0.9.2.8 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-108668). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• WordPress Plugin

Name

• Advanced Custom Fields Extended Plugin
• 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
• 0.9.2.7

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

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

Discussion