Description

Unauthenticated Cross Site Scripting (XSS) in Realtyna Organic IDX plugin <= 5.4.1 versions.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "7.1",
  "pubDate": "2026-08-27T10:16:37.003Z",
  "pubdate": "2026-08-27T10:16:37.003Z",
  "executiveSummary": "The Realtyna Organic IDX plugin, in versions 5.4.1 and below, contains an unauthenticated Reflected Cross-Site Scripting (XSS) vulnerability. This security flaw allows remote, unauthenticated attackers to inject malicious client-side scripts into the application's web pages viewed by other users. Because the vulnerability does not require authentication, it is highly accessible for exploitation. Successful execution of an XSS attack can lead to the theft of session cookies, account takeover, unauthorized modification of the website interface, or redirection of users to malicious third-party domains. The vulnerability poses a significant risk to site integrity and user data privacy, as the injected script executes within the context of the victim's session, bypassing standard browser-based security boundaries. Organizations using the affected versions of the plugin are advised to address this vulnerability immediately to prevent potential exploitation by malicious actors targeting web application sessions.",
  "technicalDetails": "The vulnerability originates from improper neutralization of user-supplied input within the Realtyna Organic IDX plugin. Specifically, the application fails to adequately sanitize or encode data passed via URL parameters or input fields before rendering it back to the browser. This lack of output encoding allows an attacker to inject arbitrary JavaScript payloads into the HTML document structure.\nThe attack flow begins when an attacker crafts a malicious URL containing a JavaScript payload embedded within a vulnerable parameter. This URL is then distributed to targets via phishing, social engineering, or public posting. When an authenticated user, such as an administrator or a registered client, clicks the link, the server processes the request and reflects the malicious script directly into the response page.\nBecause the input is reflected without sanitization, the user's browser interprets the payload as legitimate code belonging to the web application. The execution occurs within the security context of the target's session, granting the attacker access to sensitive information such as session tokens, stored credentials, or personal user data. Furthermore, the attacker can leverage this execution to perform unauthorized actions on behalf of the victim, such as modifying plugin configurations or executing administrative functions if the victim holds high-level privileges.\nThe vulnerability is classified as Reflected XSS, characterized by the immediate reflection of malicious input provided in an HTTP request. It affects versions 5.4.1 and earlier of the Realtyna Organic IDX plugin. Exploitation is facilitated by the absence of adequate input validation controls and the failure to implement appropriate Content Security Policy (CSP) headers that could restrict the execution of unauthorized scripts. The impact is significant, as the vulnerability is accessible to unauthenticated users over the network, allowing for the widespread compromise of site visitors without the need for prior authorization or elevated privileges."
}