External risk intelligence

Easy Form Builder Blind SQL Injection Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.3)

CVE-2026-42747

The vulnerability affects a WordPress plugin designed to create web forms. Such plugins are intentionally deployed to collect user input directly from the public internet, making the vulnerable interface a standard, web-facing component of a website's deployment.

SQL Injection

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A critical SQL injection vulnerability has been identified in the Easy Form Builder component, potentially allowing unauthorized access to sensitive data. This issue affects systems where the Easy Form Builder is deployed and could have significant implications if exploited. The main concern at this time is confirming whether this specific technology is in use within our environment.

  • Flaw lets attackers inject malicious SQL code.
  • Protects against potential unauthorized data access.
  • Verify if Easy Form Builder is deployed.

Attack Path

How an attacker could exploit the issue

An attacker could exploit this vulnerability by sending specially crafted input to a web form created with the Easy Form Builder. This malicious input would target the backend where the form data is processed, leading to unauthorized access to the database. The vulnerability can result in a blind SQL injection, allowing an attacker to infer data from the database without directly seeing it.

  • Exposed to the internet.
  • Malicious input to web forms.
  • Blind SQL injection.

Live Threat

Current exploitation, exposure, and threat context

A SQL injection vulnerability in Easy Form Builder could allow an unauthenticated attacker to perform a blind SQL injection. This occurs when the application improperly handles special characters within SQL commands submitted through the form. The impact is potentially significant, as it could allow attackers to infer information about the underlying database structure and content.

  • Database structure and data
  • Malicious SQL commands submitted via forms
  • Information disclosure from the database

Operational Fix

Recommended remediation, mitigation, and detection steps

This critical SQL injection vulnerability in Easy Form Builder requires immediate attention from application owners and platform teams. The first practical step is to identify all instances of the affected Easy Form Builder, confirm their exposure and business criticality, and then assign ownership for remediation. Coordination with the vendor may be necessary if a patch is unavailable.

  • Application owners should investigate usage.
  • Verify external reachability and business impact.
  • Plan remediation with vendor coordination.

Supplementary metadata

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

Frequently asked questions

What is the Easy Form Builder plugin?

Easy Form Builder is a WordPress plugin used to construct custom web forms for collecting user data. Because it allows site visitors to submit information that is processed by the website's backend, it is typically integrated directly into the public-facing pages of a WordPress site.

What does CWE-89 mean for CVE-2026-42747?

CWE-89 refers to Improper Neutralization of Special Elements used in an SQL Command, commonly known as SQL Injection. In the context of CVE-2026-42747, it means the plugin fails to properly sanitize user input before passing it to the database. This allows an attacker to manipulate SQL queries, enabling them to infer and extract sensitive information from the database, even if the application does not display the results directly.

How does an attacker trigger this vulnerability?

An attacker triggers this flaw by submitting specially crafted input through a form created by the plugin. The vulnerability is tied to the way the plugin processes these submissions. Importantly, simple form interactions that do not involve malicious SQL syntax will not trigger the bug, as it requires specific, structured input designed to manipulate database queries.

Is my site at risk with CVE-2026-42747?

According to Halo Surface Signal, this plugin is designed for public interaction, meaning the affected components are often exposed to the internet by default. If your WordPress site uses Easy Form Builder to receive input from web visitors, it is considered internet-facing and should be prioritized for review.

Do I need to take action if I use this plugin?

Yes. First, audit your environment to identify all instances of Easy Form Builder, especially those reachable from the internet. Once located, evaluate the business criticality of those forms. Coordinate with your team to monitor for vendor updates or patches, as remediation requires ensuring the plugin can safely handle user input.

References