CVE-2026-103355 in Unlimited Elements for Elementor Plugin
Summary
by MITRE • 10/04/2026
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Unlimited Elements Unlimited Elements For Elementor (Free Widgets, Addons, Templates) unlimited-elements-for-elementor allows Blind SQL Injection.This issue affects Unlimited Elements For Elementor (Free Widgets, Addons, Templates): from n/a through 2.0.20.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 10/04/2026
The vulnerability identified as Improper Neutralization of Special Elements used in an SQL Command represents a critical security flaw within the Unlimited Elements plugin for WordPress, specifically affecting versions ranging from initial releases up to version 2.0.20. This software is widely utilized by web developers and content creators who rely on Elementor page builder extensions to enhance website functionality with additional widgets, addons, and templates. The core issue lies in the application's failure to properly sanitize or validate user-supplied input before incorporating it into backend database queries. When an attacker submits maliciously crafted data through any vulnerable endpoint within the plugin, the system processes this input directly as part of a Structured Query Language command without adequate filtering mechanisms. This lack of proper neutralization allows special characters and SQL syntax to be interpreted by the underlying database management system rather than being treated as literal string data, thereby enabling an attacker to manipulate the intended logic of the query.
This specific implementation flaw manifests as a Blind SQL Injection vulnerability, which distinguishes it from traditional injection attacks that might return error messages or direct data output in the response body. In a blind scenario, the application does not display the results of the injected queries directly on the screen. Instead, the attacker must infer information based on the application's behavior, such as differences in page load times, HTTP status codes, or conditional content changes triggered by true and false conditions within the SQL payload. This technique requires more sophisticated exploitation strategies but is often more difficult to detect through standard web application firewalls because it does not produce obvious error traces that might alert administrators immediately. The attacker can systematically extract sensitive data from the database one bit at a time, including administrative credentials, user personal information, and other confidential records stored within the WordPress environment.
The operational impact of this vulnerability is severe due to the privileged nature of typical WordPress installations. Since the plugin operates with the same permissions as the web server process, successful exploitation grants an attacker full control over the underlying database. This can lead to complete site compromise, including defacement, data theft, and the installation of persistent backdoors or malware for further lateral movement within a networked environment. Furthermore, because Blind SQL Injection relies on time-based or boolean-based inference techniques, it allows attackers to bypass many basic security controls that might otherwise block obvious injection attempts. The widespread adoption of Elementor plugins means that this vulnerability potentially affects thousands of websites, creating a significant attack surface for automated scanning tools and opportunistic hackers seeking low-hanging fruit in the WordPress ecosystem.
To mitigate this risk, immediate action is required by site administrators to update the Unlimited Elements plugin to version 2.0.21 or later, where the developers have implemented proper input validation and parameterized queries to prevent SQL injection attacks. Until an update can be applied, temporary mitigations include restricting access to administrative areas via IP whitelisting if possible, implementing a Web Application Firewall that is tuned to detect blind SQL injection patterns such as time delays or boolean-based logic errors, and auditing database logs for unusual query structures. Additionally, developers should adhere to secure coding practices by always using prepared statements with parameterized queries when interacting with databases, ensuring that user input is never directly concatenated into SQL strings. Regular security audits and penetration testing are also recommended to identify similar vulnerabilities in other plugins or custom code within the WordPress installation.
From a classification perspective, this vulnerability aligns with CWE-89, which covers Improper Neutralization of Special Elements used in an SQL Command. The exploitation technique falls under ATT&CK tactic T1059, specifically subtechnique 007 for command and script interpretation via SQL injection, although the blind nature emphasizes information gathering aspects often associated with data exfiltration techniques found in later stages of an attack lifecycle. Understanding these mappings helps security teams prioritize remediation efforts based on industry-standard frameworks that define risk severity and expected attacker behavior patterns. By addressing this flaw promptly, organizations can significantly reduce their exposure to database-driven attacks that threaten the integrity and confidentiality of web applications built on WordPress platforms.