CVE-2026-32550 in Kadence Shop Kit Plugin
Summary
by MITRE • 08/27/2026
Subscriber SQL Injection in Kadence Shop Kit <= 3.0.6 versions.
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Analysis
by VulDB Data Team • 08/27/2026
The vulnerability identified as a subscriber SQL injection within the Kadence Shop Kit plugin, affecting versions up to and including 3.0.6, represents a critical security flaw that compromises the integrity of the underlying database infrastructure. This specific type of vulnerability arises from improper validation or sanitization of user-supplied input data before it is incorporated into Structured Query Language statements used for database operations. In this context, the term subscriber likely refers to users who have registered accounts on the WordPress site utilizing the plugin, particularly those interacting with e-commerce features such as order history, account details, or subscription management services provided by Kadence Shop Kit. The core technical flaw lies in the application's failure to properly escape special characters within input fields that are directly concatenated into SQL queries without adequate parameterization or prepared statement usage. This oversight allows an authenticated attacker to manipulate the structure of database commands executed on the backend server.
From a technical perspective, this vulnerability aligns with CWE-89, which categorizes Improper Neutralization of Special Elements used in an SQL Command, commonly known as SQL Injection. The attack vector typically involves an authenticated user submitting crafted input through web forms or API endpoints exposed by the plugin's functionality. By injecting malicious SQL code fragments into these inputs, such as single quotes followed by logical operators and UNION-based payloads, the attacker can alter the intended query logic. This manipulation enables the extraction of sensitive data from other tables within the database schema that were not originally targeted by the legitimate application queries. The severity is heightened because it requires authentication, meaning the threat actor must first compromise or obtain valid credentials for a subscriber account on the target WordPress installation to exploit this flaw effectively.
The operational impact of exploiting this SQL injection vulnerability can be severe and multifaceted. Once successfully exploited, an attacker gains the ability to read arbitrary data from the database, which may include sensitive customer information such as email addresses, hashed passwords, payment details if stored locally, or personal identification numbers associated with subscriber profiles. Beyond data exfiltration, depending on the specific SQL dialect supported by the underlying MySQL or MariaDB server and its configuration privileges, an attacker might potentially write files to the web root directory using functions like INTO OUTFILE, leading to remote code execution. This could result in full compromise of the WordPress installation, allowing for defacement, malware distribution, or further lateral movement within the network environment hosting the application. The breach undermines trust with customers and exposes the organization to regulatory penalties under data protection laws such as GDPR or CCPA due to the exposure of personally identifiable information.
In terms of threat modeling and behavioral analysis, this vulnerability maps directly to MITRE ATT&CK technique T1059.004, which corresponds to Command and Scripting Interpreter: SQL Commands within the Discovery and Collection phases of an attack lifecycle. The attacker utilizes standard database query commands not for their intended purpose but as a mechanism to probe the system architecture and extract valuable intelligence. This aligns with common post-exploitation behaviors where adversaries seek to map out data stores before exfiltrating critical assets or pivoting to other systems. The presence of such a flaw indicates a gap in secure coding practices, specifically regarding input validation and database interaction layers within the plugin's codebase during versions prior to 3.0.7.
To mitigate this vulnerability, immediate action is required by administrators running affected versions of Kadence Shop Kit. The primary remediation step is to upgrade the plugin to version 3.0.7 or later, where the developers have presumably implemented proper input sanitization and parameterized queries to prevent SQL injection attacks. Until an update can be applied, temporary mitigations include restricting access to administrative areas if possible, although this specific flaw targets subscriber-level accounts so standard admin restrictions may not suffice without additional web application firewall rules that detect common SQL injection patterns in POST requests related to user profile updates or account settings. Implementing a Web Application Firewall with updated signatures for SQLi can provide an additional layer of defense by blocking malicious payloads before they reach the vulnerable code path. Furthermore, conducting regular security audits and employing static analysis tools on custom plugins can help identify similar coding flaws early in the development lifecycle, ensuring that future updates adhere to secure coding standards such as those outlined in OWASP guidelines for preventing injection vulnerabilities.