CVE-2026-13114 in Motors Plugin
Summary
by MITRE • 07/11/2026
The Motors – Car Dealership & Classified Listings Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content and User Biographical Info in all versions up to, and including, 1.4.112 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
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Analysis
by VulDB Data Team • 07/11/2026
The Motors – Car Dealership & Classified Listings Plugin for WordPress represents a widely used solution for automotive dealerships seeking to showcase vehicles and manage classified listings through their wordpress websites. This plugin facilitates the creation of comprehensive car dealership portals with features including vehicle listings, dealer information, and user-generated content management. However, a critical security vulnerability has been identified within versions up to and including 1.4.112 that fundamentally compromises the integrity of the platform's user interaction mechanisms. The vulnerability manifests as a stored cross-site scripting flaw that occurs when processing comment content and user biographical information fields, creating persistent attack vectors that persist across multiple user sessions.
The technical flaw stems from inadequate input sanitization and insufficient output escaping mechanisms within the plugin's core code implementation. Specifically, when users submit comments or update their biographical information through the plugin's interface, the system fails to properly validate or sanitize the submitted data before storing it in the database. This lack of proper data sanitization allows malicious actors to inject javascript code and other malicious payloads directly into the content management system. When legitimate users subsequently access pages containing this stored malicious content, the injected scripts execute within their browser context, creating a persistent threat that can affect any user who views affected content.
The operational impact of this vulnerability extends far beyond simple data corruption or display issues, as it creates multiple attack vectors that can be exploited by unauthenticated attackers to compromise user sessions and potentially escalate privileges. Attackers can craft malicious comments containing javascript payloads that execute whenever any user accesses affected pages, enabling them to steal session cookies, redirect users to malicious sites, or perform actions on behalf of authenticated users. This vulnerability particularly affects the plugin's comment system and user profile management features, where the stored nature of the XSS allows attackers to maintain persistent access to victim systems without requiring repeated exploitation attempts.
The security implications align with common weakness enumerations such as CWE-79 - Cross-site Scripting and CWE-80 - Improper Neutralization of Script-Related HTML Tags in a Web Page. This vulnerability also maps to several ATT&CK techniques including T1566.001 - Phishing: Spearphishing Attachment and T1059.007 - Command and Scripting Interpreter: JavaScript, demonstrating how attackers can leverage this flaw to establish persistent access and execute malicious code within user browsers. The vulnerability's severity increases significantly due to its ability to affect unauthenticated attackers who do not require legitimate credentials to exploit the system.
Mitigation strategies for this vulnerability encompass both immediate remediation actions and long-term architectural improvements. The most critical immediate step involves upgrading to the latest available version of the plugin where the XSS vulnerabilities have been patched through proper input validation and output escaping mechanisms. Administrators should also implement additional security measures including content security policy headers, regular security audits of user-generated content, and monitoring for suspicious comment patterns. Organizations using this plugin should conduct comprehensive vulnerability assessments to identify all instances of the vulnerable plugin version and ensure complete removal or patching of affected installations. Additionally, implementing proper input validation at multiple layers including application-level sanitization, database-level escaping, and output encoding provides defense-in-depth protection against similar vulnerabilities in other components of the wordpress ecosystem.