CVE-2025-8303 identifies a Cross-Site Scripting (XSS) vulnerability classified under CWE-79 in the Real Estate Script V5 developed by EKA Software Computer Information Advertising Services Ltd. This vulnerability stems from improper neutralization of user input during the generation of web pages, allowing attackers to inject malicious scripts that execute in the context of the victim's browser. The affected product includes multiple modules such as the Doping Module, Store Module, and New Language System, indicating a broad attack surface within the software suite. The vulnerability is remotely exploitable over the network without requiring authentication or user interaction, as indicated by the CVSS vector (AV:N/AC:L/PR:N/UI:N). The impact primarily affects the integrity and availability of the web application, potentially enabling attackers to manipulate web content, perform unauthorized actions, or cause denial of service. Confidentiality is not directly impacted. The vendor was contacted early but did not respond, and no patches or mitigations have been published to date. The vulnerability affects all versions up to 17022026, with no specific version differentiation. No known exploits are currently in the wild, but the low complexity and lack of required privileges make exploitation plausible. The vulnerability's medium CVSS score of 6.5 reflects these factors. The lack of vendor response and patch availability increases the urgency for organizations to implement compensating controls and monitor for exploitation attempts.

For European organizations using EKA Software's Real Estate Script V5, this vulnerability poses a risk of web application compromise through XSS attacks. Attackers could inject malicious scripts that alter website content, redirect users to malicious sites, or perform unauthorized actions on behalf of users, potentially damaging brand reputation and user trust. The availability impact could disrupt business operations, especially for real estate platforms relying on continuous online presence. While confidentiality is not directly affected, the integrity and availability impacts can lead to financial losses and regulatory scrutiny under GDPR if user data or services are disrupted. The lack of vendor patches means organizations must rely on internal mitigations, increasing operational overhead. Given the prominence of real estate platforms in countries like Germany, France, the UK, Spain, and Italy, the threat could affect a significant number of users and businesses in these markets. Additionally, attackers could leverage this vulnerability as a foothold for further attacks or phishing campaigns targeting European users.

Organizations should immediately implement strict input validation and output encoding to neutralize malicious scripts within the Real Estate Script V5 application. Employing Content Security Policy (CSP) headers can help restrict the execution of unauthorized scripts. Deploying Web Application Firewalls (WAFs) configured to detect and block XSS payloads provides an additional layer of defense. Regularly monitoring web server logs and user activity for anomalous behavior can aid in early detection of exploitation attempts. If possible, isolate the vulnerable modules or restrict access to them until patches or updates are available. Engage with the vendor for updates and consider alternative software solutions if remediation is delayed. Conduct security awareness training for web administrators and developers to recognize and prevent XSS vulnerabilities in future development. Finally, maintain up-to-date backups to enable recovery in case of service disruption.