CVE-2024-29813 in Funnel Builder Plugin
Summary
by MITRE • 03/27/2024
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in CartFlows Inc. Funnel Builder by CartFlows allows Stored XSS.This issue affects Funnel Builder by CartFlows: from n/a through 2.0.1.
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Analysis
by VulDB Data Team • 04/12/2025
The vulnerability identified as CVE-2024-29813 represents a critical cross-site scripting flaw within the Funnel Builder by CartFlows plugin, specifically impacting versions ranging from an unspecified initial release through version 2.0.1. This weakness falls under the category of improper input neutralization during web page generation, creating a persistent security risk that enables attackers to inject malicious scripts into web pages viewed by other users. The vulnerability is classified as a stored XSS attack vector, meaning that malicious code can be permanently stored on the server and subsequently executed whenever affected pages are loaded by unsuspecting users. This particular flaw resides within the web application's content generation process where user inputs are not adequately sanitized or escaped before being rendered in web pages, creating an exploitable pathway for attackers to manipulate the application's behavior and potentially compromise user sessions.
The technical implementation of this vulnerability demonstrates a failure in input validation and output encoding mechanisms within the CartFlows plugin's funnel creation and management interfaces. Attackers can leverage this weakness by submitting malicious script code through various input fields within the plugin's administrative panels, which are then stored in the database and executed when legitimate users access the affected pages. The stored nature of this XSS vulnerability means that the malicious payload persists even after the initial injection, making it particularly dangerous as it can affect multiple users over extended periods. The vulnerability's impact extends beyond simple script execution, potentially allowing attackers to hijack user sessions, steal sensitive information, modify content, or redirect users to malicious websites. This flaw operates at the application layer and specifically targets the web interface components where user-generated content is processed and displayed, making it particularly effective in environments where the plugin is used to create and manage marketing funnels.
The operational consequences of this vulnerability are severe and multifaceted, affecting both the security posture of websites utilizing the CartFlows plugin and the privacy of end users. When exploited, the stored XSS attack can lead to session hijacking, credential theft, and unauthorized access to sensitive customer data within the marketing funnel environment. The vulnerability creates a persistent threat vector that remains active until the plugin is updated or the malicious content is manually removed from the database. Organizations using this plugin may experience compromised user trust, potential regulatory violations, and damage to their digital marketing capabilities. The attack surface is particularly concerning given that marketing funnel builders often contain sensitive customer information, transaction data, and personal details that could be accessed through successful exploitation of this vulnerability.
Mitigation strategies for CVE-2024-29813 should prioritize immediate plugin updates to versions that address the stored XSS vulnerability, as recommended by the vendor. Organizations should implement comprehensive input validation and output encoding mechanisms to prevent malicious scripts from being stored or executed within the application. Network administrators should consider implementing web application firewalls and content security policies to detect and block potential XSS payloads. Security teams should conduct thorough vulnerability assessments of all web applications and plugins to identify similar weaknesses that may exist within their infrastructure. The implementation of proper input sanitization techniques and output escaping mechanisms aligns with established security practices and addresses the core issues identified in CWE-79, which specifically covers cross-site scripting vulnerabilities. Additionally, organizations should consider implementing regular security audits and penetration testing to proactively identify and remediate similar vulnerabilities before they can be exploited by malicious actors, as outlined in the attack patterns described within the MITRE ATT&CK framework for web application attacks.