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-supplied input during the generation of web pages, which allows attackers to inject malicious JavaScript code into the application. The affected product includes additional modules such as the Doping Module, Store Module, and New Language System, broadening the attack surface. Exploitation requires no authentication or user interaction and can be performed remotely over the network, making it accessible to a wide range of attackers. The vulnerability can lead to script execution in the context of the victim’s browser, enabling attacks such as session hijacking, defacement, redirection to malicious sites, or denial of service by disrupting application availability. The vendor was contacted early about this issue but did not respond, and no patches or fixes have been released to date. The CVSS v3.1 base score is 6.5, indicating a medium severity with network attack vector, low attack complexity, no privileges required, no user interaction, unchanged scope, no confidentiality impact, but partial integrity and availability impacts. No known exploits have been reported in the wild, but the lack of vendor response and patch availability increases the risk for users of this software. The vulnerability affects all versions up to the specified date (through 17022026).

The primary impact of CVE-2025-8303 is on the integrity and availability of affected web applications. Attackers can inject malicious scripts that execute in users’ browsers, potentially leading to unauthorized actions such as session hijacking, defacement, or redirection to phishing or malware sites. This can damage the reputation of organizations using the affected Real Estate Script and erode user trust. Additionally, attackers might disrupt service availability by exploiting the vulnerability to cause application crashes or resource exhaustion. Since the vulnerability requires no authentication or user interaction, it can be exploited at scale by automated tools, increasing the risk of widespread attacks. Organizations relying on this software for real estate listings, e-commerce, or multilingual services may face operational disruptions and data integrity issues. The absence of vendor patches and the vendor’s non-responsiveness further exacerbate the risk, leaving organizations exposed until mitigations are applied. The confidentiality impact is minimal as the vulnerability does not directly expose sensitive data, but indirect data leakage through session hijacking or phishing is possible.

1. Implement strict input validation on all user-supplied data, ensuring that potentially malicious characters are sanitized or rejected before processing. 2. Apply context-aware output encoding (e.g., HTML entity encoding) when rendering user input in web pages to prevent script execution. 3. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of successful XSS attacks. 4. Monitor web application logs and network traffic for unusual patterns indicative of XSS exploitation attempts. 5. Isolate critical application components and sensitive user sessions to limit the scope of potential attacks. 6. If possible, replace or upgrade the affected Real Estate Script with alternative software that has active vendor support and security patches. 7. Educate developers and administrators on secure coding practices related to input handling and output encoding. 8. Use web application firewalls (WAFs) configured to detect and block common XSS attack patterns as an interim protective measure. 9. Regularly review and update security policies to include response plans for XSS incidents. 10. Engage with the vendor or community to encourage patch development and disclosure transparency.