CVE-2024-6263 in WP Lightbox 2
Summary
by MITRE • 07/03/2024
The WP Lightbox 2 plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘title’ parameter in all versions up to, and including, 3.0.6.6 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, 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 • 05/25/2026
The WP Lightbox 2 plugin vulnerability represents a critical stored cross-site scripting flaw that undermines the security posture of WordPress installations. This vulnerability affects all versions up to and including 3.0.6.6, making it a widespread concern for administrators who have not yet updated their plugins. The issue stems from inadequate input sanitization and output escaping mechanisms within the plugin's handling of the 'title' parameter, creating a persistent attack vector that can compromise user sessions and data integrity. The vulnerability's classification aligns with CWE-79, which specifically addresses cross-site scripting vulnerabilities, and demonstrates how insufficient data validation can lead to severe security implications in content management systems. Attackers with Contributor-level access or higher can exploit this weakness to inject malicious scripts that execute in the context of other users' browsers, potentially leading to session hijacking, data exfiltration, or further exploitation of the compromised systems.
The operational impact of this vulnerability extends beyond simple script execution, as it enables attackers to manipulate the plugin's functionality and potentially gain unauthorized access to sensitive information. When authenticated users view pages containing the maliciously injected content, the stored scripts execute automatically, creating a persistent threat that can affect multiple users over time. This type of vulnerability falls under the ATT&CK framework's T1566 category, specifically targeting credential access through social engineering and malicious content delivery. The attack surface becomes particularly dangerous because contributors and above typically have sufficient privileges to modify content, making the exploitation process relatively straightforward for attackers who have gained access to these user accounts. The stored nature of the XSS means that the malicious code remains embedded in the plugin's database entries, ensuring that every subsequent access to affected pages will trigger the payload execution.
Mitigation strategies for this vulnerability require immediate plugin updates to versions that address the sanitization and escaping deficiencies. System administrators should implement comprehensive security monitoring to detect unusual content modifications and user activities that might indicate exploitation attempts. The recommended remediation approach includes applying the latest plugin versions, implementing proper input validation at multiple layers, and establishing content security policies to prevent unauthorized script execution. Additional protective measures should include role-based access controls that limit content modification privileges to trusted administrators only, regular security audits of installed plugins, and implementation of web application firewalls that can detect and block suspicious script injection attempts. Organizations should also consider implementing automated vulnerability scanning tools that can identify similar issues in other plugins or custom code components, as this vulnerability demonstrates how seemingly minor input handling flaws can create significant security risks in widely used software components.