CVE-2023-6632 in Happy Addons for Elementor Plugin
Summary
by MITRE • 01/11/2024
The Happy Addons for Elementor plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via DOM in all versions up to and including 3.9.1.1 (versions up to 2.9.1.1 in Happy Addons for Elementor Pro) due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
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Analysis
by VulDB Data Team • 04/11/2026
The vulnerability identified as CVE-2023-6632 affects the Happy Addons for Elementor plugin, a popular WordPress extension that enhances the functionality of the Elementor page builder. This plugin version range includes all releases up to and including 3.9.1.1 for the free version and 2.9.1.1 for the Pro version, creating a significant attack surface across numerous installations. The flaw represents a critical security weakness that directly impacts the integrity of web applications built on WordPress platforms, particularly those utilizing Elementor for page construction.
The technical root cause of this vulnerability lies in the plugin's failure to properly sanitize user input and escape output before rendering content in web pages. Specifically, the issue manifests as a reflected cross-site scripting vulnerability within the Document Object Model, where malicious scripts can be injected into web pages that are subsequently executed by unsuspecting users. This occurs because the plugin does not adequately validate or escape parameters received from HTTP requests before incorporating them into dynamic web page content. The vulnerability follows CWE-79 which classifies improper neutralization of input during web page generation, making it susceptible to attackers who can craft malicious URLs or forms to deliver payloads.
The operational impact of this vulnerability is severe for WordPress administrators and end users who rely on the Happy Addons plugin. Attackers can exploit this weakness by crafting malicious links or forms that, when clicked by authenticated or unauthenticated users, execute arbitrary JavaScript code in the victim's browser context. This could enable attackers to steal session cookies, perform unauthorized actions on behalf of users, redirect victims to malicious sites, or even install malware on affected systems. The reflected nature of the vulnerability means that the malicious payload is reflected back to the user through the web application's response, making it particularly dangerous as it can be delivered through various vectors including email links, social media posts, or compromised websites that reference the vulnerable plugin.
The attack vector requires minimal privileges as the vulnerability is accessible to unauthenticated attackers, making it particularly dangerous for widespread exploitation. According to ATT&CK framework techniques, this vulnerability aligns with T1566 which covers phishing attacks and T1059 which covers command and scripting interpreters, as attackers can leverage this weakness to execute malicious code through web browsers. The impact extends beyond individual user sessions to potentially compromise entire WordPress installations, especially when combined with other vulnerabilities or when the plugin is used in enterprise environments where WordPress serves as a critical business application.
Organizations should immediately update to patched versions of the Happy Addons for Elementor plugin to remediate this vulnerability. Security administrators should also implement network monitoring to detect potential exploitation attempts and consider implementing web application firewalls to block known malicious payloads. Additionally, regular security audits of WordPress installations should include checks for vulnerable plugins and themes, as well as proper input validation and output escaping practices throughout the application code. The vulnerability serves as a reminder of the critical importance of maintaining up-to-date security practices and the potential consequences of insufficient input sanitization in web applications.