CVE-2024-51787 is a stored Cross-site Scripting (XSS) vulnerability identified in the ElementsReady Addons for Elementor plugin, specifically affecting versions up to 6.4.3. The vulnerability stems from improper neutralization of user-supplied input during the generation of web pages, which allows malicious scripts to be injected and stored persistently within the affected website's content. When other users or administrators visit the compromised pages, the injected scripts execute in their browsers under the context of the vulnerable site, potentially leading to session hijacking, credential theft, unauthorized actions, or distribution of malware. This vulnerability does not require authentication or user interaction beyond accessing the infected page, making it easier for attackers to exploit. ElementsReady Addons for Elementor is a popular plugin used to extend the Elementor page builder functionality in WordPress, a widely adopted content management system powering millions of websites globally. The lack of a CVSS score indicates that the vulnerability is newly published and not yet fully assessed, but the nature of stored XSS vulnerabilities typically represents a serious security risk. No patches or exploit code are currently publicly available, but the vendor and security community are expected to address this promptly. The vulnerability was reserved and published in early November 2024 by Patchstack, a known security researcher group focusing on WordPress plugins.

The impact of CVE-2024-51787 is significant for organizations using the ElementsReady Addons for Elementor plugin. Successful exploitation allows attackers to execute arbitrary JavaScript in the context of the affected website, leading to theft of sensitive information such as cookies, session tokens, and personal data. This can result in account takeover, unauthorized administrative actions, and defacement of websites. Additionally, attackers can use the vulnerability to distribute malware or redirect users to malicious sites, damaging the organization's reputation and potentially causing legal and compliance issues. Since the vulnerability is stored XSS, the malicious payload persists, increasing the risk of repeated exploitation. The ease of exploitation without authentication and the widespread use of Elementor and its addons in WordPress sites globally amplify the threat. Organizations relying on this plugin for their web presence face risks to confidentiality, integrity, and availability of their web assets and user data.

To mitigate CVE-2024-51787, organizations should immediately check if they are using ElementsReady Addons for Elementor version 6.4.3 or earlier and plan to update to a patched version once released by the vendor. In the absence of an official patch, administrators should consider temporarily disabling the plugin or removing it if it is not critical. Implementing a Web Application Firewall (WAF) with rules to detect and block typical XSS payloads can provide interim protection. Website owners should audit user-generated content and sanitize inputs rigorously to prevent injection of malicious scripts. Regularly scanning the website for injected scripts and unusual behavior can help detect exploitation attempts early. Additionally, enforcing Content Security Policy (CSP) headers can reduce the impact of XSS by restricting the execution of unauthorized scripts. Educating site administrators and users about the risks of XSS and safe content management practices is also recommended.