CVE-2024-32573 in WP-Lister Lite for eBay Plugin
Summary
by MITRE • 04/18/2024
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WP Lab WP-Lister Lite for eBay wp-lister-for-ebay.This issue affects WP-Lister Lite for eBay: from n/a through <= 3.5.11.
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Analysis
by VulDB Data Team • 04/02/2026
This cross-site scripting vulnerability exists within the WP-Lister Lite for eBay plugin, a popular WordPress extension used for managing eBay listings. The flaw manifests in the improper handling of user input during web page generation processes, creating a pathway for malicious actors to inject arbitrary script code into web pages viewed by other users. The vulnerability affects versions up to and including 3.5.11, with no specific lower bound mentioned, suggesting the issue may have existed in earlier versions as well. This type of vulnerability falls under CWE-79 which specifically addresses cross-site scripting flaws in web applications.
The technical implementation of this vulnerability occurs when the plugin fails to properly sanitize or escape user-controllable data before incorporating it into dynamically generated web pages. When users input data through various plugin interfaces such as product descriptions, titles, or listing parameters, this data is processed and rendered on web pages without adequate protection mechanisms. Attackers can exploit this weakness by crafting malicious input containing script tags or other executable code that gets stored and subsequently executed in the browser of unsuspecting users. The attack vector typically involves injecting malicious payloads through forms or data entry points within the plugin's user interface.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to perform session hijacking, deface websites, steal sensitive information, or redirect users to malicious domains. Users with administrative privileges face heightened risk as attackers could potentially escalate privileges or gain full control over the affected WordPress installation. The vulnerability's persistence depends on how the data is stored and rendered, with stored XSS variants being particularly dangerous as they can affect multiple users over time. This makes the vulnerability especially concerning for e-commerce platforms where user-generated content is common and sensitive business data is frequently processed.
Mitigation strategies should focus on implementing comprehensive input validation and output encoding mechanisms throughout the plugin's codebase. Developers must ensure all user-provided data undergoes proper sanitization before being stored or rendered in web contexts, utilizing established encoding functions for html, javascript, and other contexts as recommended by the OWASP XSS Prevention Cheat Sheet. The WordPress security team recommends updating to the latest available version of the plugin, which should contain patches addressing this vulnerability. Additionally, implementing content security policies and regular security audits of plugin code can help prevent similar issues. Organizations should also consider implementing web application firewalls and monitoring for suspicious input patterns to detect potential exploitation attempts. This vulnerability aligns with ATT&CK technique T1566.001 which covers the use of web shells and malicious scripts to establish persistent access to compromised systems.