CVE-2025-13504 is a reflected Cross-site Scripting (XSS) vulnerability found in the e-plugins Real Estate Pro plugin, which is used to manage real estate listings on WordPress sites. The vulnerability stems from improper neutralization of user-supplied input during web page generation, allowing malicious actors to inject arbitrary JavaScript code into web pages viewed by other users. This reflected XSS can be exploited by crafting malicious URLs or input fields that, when accessed by victims, execute attacker-controlled scripts in their browsers. Such scripts can steal session cookies, perform actions on behalf of the user, redirect users to phishing sites, or deliver malware. The affected versions include all releases up to and including 2.1.4, with no specific earliest affected version identified. No CVSS score has been assigned yet, and no public exploits have been reported. The vulnerability does not require authentication, increasing its risk profile. The plugin is commonly used by real estate agencies and brokers to display property listings and client information, making the confidentiality and integrity of user data critical. The lack of proper input sanitization indicates a failure in secure coding practices, and the absence of patches or mitigations at the time of publication necessitates immediate attention from administrators. The vulnerability was reserved in November 2025 and published in January 2026, indicating recent discovery and disclosure.

For European organizations, exploitation of this vulnerability could lead to unauthorized access to sensitive client information, including personal data and potentially financial details associated with real estate transactions. Attackers could hijack user sessions, leading to account compromise and unauthorized actions within the affected websites. This can result in reputational damage, loss of customer trust, and potential regulatory penalties under GDPR due to data breaches. The reflected XSS nature means that attacks can be delivered via phishing emails or malicious links, increasing the risk of widespread impact. Real estate agencies and platforms that rely heavily on the Real Estate Pro plugin are particularly vulnerable, as their websites are often public-facing and attract significant user interaction. The potential for data theft and manipulation also poses risks to business operations and client confidentiality. Additionally, the vulnerability could be leveraged as a foothold for further attacks, such as delivering malware or conducting social engineering campaigns targeting European users.

Administrators should monitor for the release of official patches from e-plugins and apply them immediately once available. In the interim, implementing strict input validation and output encoding on all user-supplied data within the Real Estate Pro plugin is critical to prevent script injection. Employing a robust Content Security Policy (CSP) can help restrict the execution of unauthorized scripts and mitigate the impact of XSS attacks. Web Application Firewalls (WAFs) should be configured to detect and block suspicious input patterns associated with reflected XSS. Regular security audits and penetration testing focused on the plugin’s input handling can identify residual vulnerabilities. Educating users about the risks of clicking on suspicious links and implementing multi-factor authentication (MFA) can reduce the impact of session hijacking. Finally, organizations should ensure comprehensive logging and monitoring to detect exploitation attempts promptly.