Unauthenticated XSS in Realtyna Organic IDX Plugin

Executive Summary

This is an Unauthenticated Cross Site Scripting (XSS) vulnerability found in the Realtyna Organic IDX plugin versions 5.4.1 and below. It allows attackers to inject malicious scripts into web pages viewed by other users without needing authentication.

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Detection Guidance

To detect this XSS vulnerability in Realtyna Organic IDX plugin <= 5.4.1, inspect web application traffic for suspicious input patterns in parameters. Check plugin version and scan for reflected or stored XSS payloads in user inputs like search fields or forms. Use tools like Burp Suite or OWASP ZAP to test inputs with XSS payloads.

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Impact Analysis

An attacker could exploit this to steal user sessions, deface websites, or redirect users to malicious sites. Users with the vulnerable plugin installed may have their browsers compromised, leading to data theft or unauthorized actions on their behalf.

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Compliance Impact

This XSS vulnerability could lead to unauthorized access to user data, violating GDPR's data protection principles and HIPAA's security requirements for protected health information. Organizations may face compliance breaches if user data is compromised through this flaw.

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Mitigation Strategies

Immediately update the Realtyna Organic IDX plugin to the latest version if available. If no patch exists, disable the plugin temporarily. Implement input validation and output encoding on all user-supplied data. Use a web application firewall to filter malicious XSS payloads.

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