CVE-2025-3075 is a stored cross-site scripting (XSS) vulnerability identified in the Elementor Website Builder plugin for WordPress, versions up to and including 3.29.0. The root cause is insufficient sanitization and escaping of user-supplied attributes within the 'elementor-element' shortcode, which is used to generate web page content. Authenticated attackers with contributor-level access or higher can exploit this flaw by injecting arbitrary JavaScript code into pages. This malicious code is stored persistently and executed in the browsers of any users who visit the compromised pages. The vulnerability specifically manifests when the 'Element Caching' feature is enabled, which caches rendered elements and thus serves the injected scripts to visitors. The CVSS v3.1 base score is 6.4, reflecting a medium severity with network attack vector, low attack complexity, requiring privileges but no user interaction, and impacting confidentiality and integrity with a scope change. No public exploits have been reported yet, but the vulnerability poses a significant risk due to the widespread use of Elementor in WordPress sites. The flaw can lead to session hijacking, theft of sensitive data, or unauthorized actions performed on behalf of users. The vulnerability is tracked under CWE-79, which covers improper neutralization of input during web page generation. Since the plugin is widely used for website building, the attack surface is large, especially for sites that enable element caching and allow contributors to add content. The vulnerability highlights the importance of rigorous input validation and output encoding in web applications, especially those that allow user-generated content to be rendered dynamically.

The impact of CVE-2025-3075 is primarily on the confidentiality and integrity of affected websites and their users. Exploitation allows authenticated contributors to inject malicious scripts that execute in the context of other users visiting the compromised pages. This can lead to session hijacking, theft of authentication tokens, unauthorized actions performed with victim user privileges, and potential defacement or redirection attacks. Although availability is not directly affected, the reputational damage and loss of user trust can be significant. Organizations relying on Elementor with element caching enabled face increased risk, especially those with multiple contributors or editors. Attackers could leverage this vulnerability to escalate privileges or pivot to other parts of the network if administrative accounts are compromised. The scope of affected systems is broad given Elementor's popularity in the WordPress ecosystem, making it a notable threat to websites globally. The absence of known exploits in the wild currently reduces immediate risk but does not eliminate the potential for future attacks once exploit code becomes available.

To mitigate CVE-2025-3075, organizations should immediately assess whether 'Element Caching' is enabled on their Elementor-powered WordPress sites and consider disabling this feature until a security patch is released. Restrict contributor-level access strictly, ensuring only trusted users have permissions to add or modify content that could include shortcodes. Implement a robust Content Security Policy (CSP) to limit the execution of unauthorized scripts and reduce the impact of potential XSS attacks. Regularly audit and sanitize all user-generated content, especially inputs that interact with shortcodes or dynamic page elements. Monitor website logs for unusual activities or unexpected script injections. Stay updated with Elementor plugin releases and apply security patches promptly once available. Additionally, consider deploying web application firewalls (WAFs) with custom rules to detect and block malicious payloads targeting this vulnerability. Educate content contributors about safe content practices and the risks of injecting untrusted code. Finally, conduct periodic security assessments and penetration tests focusing on plugin vulnerabilities and user privilege management.