CVE-2025-13007 is a stored cross-site scripting (XSS) vulnerability identified in the WP Social Ninja plugin for WordPress, which is widely used to embed social feeds, customer reviews, and chat widgets from platforms like Google Reviews, YouTube, and Facebook. The vulnerability stems from improper neutralization of input during web page generation (CWE-79), specifically due to insufficient sanitization and escaping of externally sourced content before rendering it on WordPress pages. This allows unauthenticated attackers to inject arbitrary JavaScript code by posting malicious content to connected social media profiles (e.g., Google Business Profile or Facebook page). When a user visits the affected WordPress page, the injected script executes in their browser context, potentially leading to session hijacking, credential theft, or unauthorized actions performed on behalf of the user. The vulnerability affects all versions up to and including 3.20.3 of the plugin. The CVSS v3.1 base score is 6.1, reflecting a medium severity with network attack vector, low attack complexity, no privileges required, but user interaction needed (visiting the page). The scope is changed (S:C) because the vulnerability affects resources beyond the vulnerable component. There are currently no known exploits in the wild and no official patches released. The vulnerability highlights the risk of trusting and directly embedding third-party social media content without proper sanitization, especially in popular CMS environments like WordPress.

For European organizations, this vulnerability poses a moderate risk primarily to confidentiality and integrity of user data. Attackers can execute malicious scripts in the context of the vulnerable website, potentially stealing session cookies, redirecting users to phishing sites, or performing unauthorized actions on behalf of users. This can lead to reputational damage, loss of customer trust, and potential regulatory penalties under GDPR if personal data is compromised. Public-facing websites that heavily rely on social media integrations for customer engagement, especially in sectors like e-commerce, media, and public services, are at higher risk. The vulnerability does not directly impact availability but can be leveraged as a foothold for further attacks. Since exploitation requires the attacker to post malicious content to connected social media profiles, organizations with less control over these profiles or that allow user-generated content are more vulnerable. The lack of patches increases exposure time, emphasizing the need for interim mitigations.

1. Immediately review and restrict which social media profiles are connected to the WP Social Ninja plugin, ensuring only trusted and controlled accounts are linked. 2. Implement server-side input validation and output encoding for all externally sourced content before rendering it on WordPress pages, using security libraries or WordPress security APIs. 3. Employ a Web Application Firewall (WAF) with custom rules to detect and block suspicious script injections in social feed content. 4. Monitor social media profiles for unauthorized or suspicious posts that could contain malicious payloads. 5. Educate site administrators about the risks of embedding untrusted third-party content and encourage regular audits of plugin configurations. 6. Once available, promptly apply official patches or updates from the plugin vendor. 7. Consider temporarily disabling the plugin or the embedding of external social feeds if immediate patching is not possible. 8. Use Content Security Policy (CSP) headers to restrict the execution of inline scripts and limit the domains from which scripts can be loaded, reducing the impact of potential XSS attacks.