CVE-2024-49296 in Custom Add to Cart Button Label and Link Plugin
Summary
by MITRE • 10/17/2024
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in JC Custom Add to Cart Button Label and Link woo-custom-cart-button allows Stored XSS.This issue affects Custom Add to Cart Button Label and Link: from n/a through <= 1.6.1.
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Analysis
by VulDB Data Team • 04/06/2026
The vulnerability identified as CVE-2024-49296 represents a critical cross-site scripting weakness within the JC Custom Add to Cart Button Label and Link WordPress plugin, specifically impacting versions up to and including 1.6.1. This stored XSS vulnerability arises from inadequate input sanitization during the web page generation process, allowing malicious actors to inject persistent script code into the plugin's configuration fields. The flaw enables attackers to execute arbitrary JavaScript in the context of any user's browser who views pages containing the compromised cart button elements, potentially leading to session hijacking, credential theft, or unauthorized administrative actions.
The technical implementation of this vulnerability stems from the plugin's failure to properly neutralize user-supplied input when rendering cart button labels and links within the WordPress admin interface. When administrators or users input content into the custom button configuration fields, the plugin does not adequately sanitize or escape these inputs before storing them in the database and subsequently rendering them on frontend pages. This improper handling of user input creates an environment where malicious scripts can be stored and executed, making it a classic stored XSS vulnerability categorized under CWE-79 - Improper Neutralization of Input During Web Page Generation. The vulnerability specifically affects the plugin's ability to properly escape HTML content, allowing attackers to inject script tags or other malicious payloads that persist across page requests.
The operational impact of this vulnerability extends beyond simple script execution, as it can be leveraged to establish persistent footholds within WordPress environments. Attackers can craft malicious payloads that redirect users to phishing sites, steal cookies and session tokens, or even modify the plugin's functionality to redirect traffic to malicious endpoints. Given that this affects a widely used WooCommerce plugin, the potential attack surface is significant, particularly in environments where administrators have elevated privileges. The stored nature of the vulnerability means that once exploited, the malicious code will execute automatically for all users who access affected pages, making it particularly dangerous for sites with high traffic or multiple administrators. This vulnerability aligns with ATT&CK technique T1566.001 - Phishing: Spearphishing Attachment, as attackers could use the XSS to deliver malicious payloads that compromise user sessions and gain unauthorized access to WordPress administration interfaces.
Mitigation strategies for CVE-2024-49296 should prioritize immediate plugin updates to version 1.6.2 or later, which presumably includes patches for the input sanitization issues. Administrators should also implement comprehensive input validation and output escaping mechanisms within their WordPress environments, ensuring that all user-supplied content is properly sanitized before storage and rendering. Additional protective measures include implementing Content Security Policy headers to limit script execution, conducting regular security audits of plugin configurations, and monitoring for unauthorized changes to plugin settings. Organizations should also consider implementing web application firewalls that can detect and block suspicious script injection attempts. The vulnerability highlights the critical importance of proper input validation and output escaping practices as outlined in OWASP Top Ten Project guidelines, particularly focusing on the prevention of XSS vulnerabilities in web applications.