CVE-2025-0321 is a DOM-based stored Cross-Site Scripting vulnerability identified in the ElementsKit Pro plugin for WordPress, affecting all versions up to and including 3.7.8. The root cause is insufficient sanitization and escaping of the 'url' parameter during web page generation, which allows authenticated users with Contributor-level permissions or higher to inject arbitrary JavaScript code into pages. This malicious code is stored persistently and executes in the browsers of any users who access the infected pages, potentially compromising user sessions, stealing cookies, or performing unauthorized actions on behalf of users. The vulnerability leverages the CWE-79 category of improper neutralization of input during web page generation. The CVSS v3.1 base score is 6.4, reflecting network attack vector, low attack complexity, requiring privileges (Contributor or above), no user interaction, and a scope change. The impact affects confidentiality and integrity but not availability. No public exploits have been reported yet, but the vulnerability is published and known. The plugin is widely used in WordPress sites, making this a significant risk for many organizations relying on this plugin for site functionality. The vulnerability highlights the importance of proper input validation and output encoding in web applications, especially in plugins that handle user-supplied parameters.

The primary impact of CVE-2025-0321 is the compromise of confidentiality and integrity of affected WordPress sites and their users. Attackers with Contributor-level access can inject malicious scripts that execute in the context of other users, potentially leading to session hijacking, theft of sensitive information such as cookies or credentials, and unauthorized actions performed with the victim's privileges. This can result in account takeover, defacement, or further exploitation of the website infrastructure. Since the vulnerability requires authenticated access, the risk is somewhat mitigated by access controls; however, many WordPress sites allow Contributor-level roles for content creators or editors, increasing the attack surface. The scope change in CVSS indicates that the vulnerability can affect components beyond the initially vulnerable plugin, potentially impacting the entire site. Organizations worldwide using ElementsKit Pro are at risk, especially those with multiple users having Contributor or higher roles. The absence of known exploits in the wild reduces immediate risk but does not eliminate the threat, as attackers may develop exploits following public disclosure. The vulnerability can undermine user trust and lead to reputational damage, data breaches, and compliance violations.

1. Monitor the vendor’s official channels for patches addressing CVE-2025-0321 and apply updates promptly once available. 2. Until patches are released, restrict Contributor-level and higher privileges to trusted users only, minimizing the number of accounts that can exploit this vulnerability. 3. Implement strict input validation and output encoding on the 'url' parameter and other user-supplied inputs within the plugin or via custom filters/hooks if possible. 4. Deploy a Web Application Firewall (WAF) with rules targeting common XSS payloads and suspicious 'url' parameter usage to detect and block exploitation attempts. 5. Conduct regular security audits and code reviews of plugins and themes to identify similar input sanitization issues. 6. Educate site administrators and content creators about the risks of privilege misuse and the importance of secure content management practices. 7. Consider temporarily disabling or replacing ElementsKit Pro with alternative plugins if immediate patching is not feasible and risk is high. 8. Enable Content Security Policy (CSP) headers to reduce the impact of injected scripts by restricting script sources. 9. Monitor logs for unusual activity related to the 'url' parameter or Contributor accounts to detect potential exploitation attempts early.