CVE-2025-47604 is a Stored Cross-Site Scripting (XSS) vulnerability classified under CWE-79 (Improper Neutralization of Input During Web Page Generation) affecting the product Inline Related Posts by Data443 Risk Migitation, Inc. This vulnerability arises because the product fails to properly sanitize or neutralize user-supplied input when generating web pages, allowing malicious scripts to be stored and subsequently executed in the context of other users' browsers. The affected versions include all versions up to 3.8.0, with no specific lower bound version identified. The vulnerability has a CVSS 3.1 base score of 6.5, indicating a medium severity level. The CVSS vector (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L) shows that the attack can be performed remotely over the network with low attack complexity, requires low privileges, and user interaction is needed. The scope is changed (S:C), meaning the vulnerability affects resources beyond the initially vulnerable component. The impact affects confidentiality, integrity, and availability to a limited extent. Stored XSS vulnerabilities are particularly dangerous because the malicious payload is permanently stored on the target system (e.g., in a database) and served to multiple users, increasing the attack surface. Exploitation could allow attackers to steal session cookies, perform actions on behalf of users, or deliver malware. No known exploits are currently reported in the wild, and no patches or fixes have been linked yet. The vulnerability was published on May 7, 2025, and is tracked by Patchstack and CISA enrichment, indicating recognition by security authorities.

For European organizations using Inline Related Posts, this vulnerability poses a risk of persistent cross-site scripting attacks that could compromise user accounts, leak sensitive information, or enable unauthorized actions within web applications. Given that Inline Related Posts is typically used to enhance website content by dynamically showing related posts, the vulnerability could affect websites with significant user interaction, such as news portals, blogs, or e-commerce platforms. The impact includes potential data leakage, session hijacking, defacement, or distribution of malware to site visitors. This could lead to reputational damage, regulatory non-compliance (e.g., GDPR violations if personal data is exposed), and financial losses. The requirement for low privileges and user interaction means that attackers might exploit compromised or low-privilege accounts to inject malicious scripts, which then affect other users. The changed scope indicates that the vulnerability could impact components beyond the plugin itself, potentially affecting the entire web application environment. Although no exploits are currently known, the medium severity and nature of stored XSS warrant proactive mitigation to prevent exploitation, especially in sectors with high web traffic or sensitive data processing.

1. Immediate mitigation should include disabling or removing the Inline Related Posts plugin until a patch is available. 2. Monitor vendor communications and security advisories for official patches or updates addressing CVE-2025-47604 and apply them promptly. 3. Implement strict Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of XSS attacks. 4. Conduct thorough input validation and output encoding on all user-supplied data within the web application, especially where Inline Related Posts integrates content. 5. Employ web application firewalls (WAFs) with updated rules to detect and block XSS payloads targeting this vulnerability. 6. Perform regular security audits and penetration testing focusing on XSS vectors in the affected web applications. 7. Educate users and administrators about the risks of clicking suspicious links or interacting with untrusted content to reduce user interaction exploitation. 8. Review and restrict privileges for users who can submit content or interact with the plugin to minimize the risk of malicious input injection. 9. Implement robust session management and multi-factor authentication to limit the impact of session hijacking attempts resulting from XSS exploitation.