CVE-2025-25082 Overview
CVE-2025-25082 is a stored Cross-Site Scripting (XSS) vulnerability in the Max Chirkov FlexIDX Home Search plugin for WordPress. The flaw stems from improper neutralization of user-supplied input during web page generation [CWE-79]. Attackers with low-privilege authenticated access can inject persistent JavaScript payloads that execute in the browsers of users viewing affected pages. The vulnerability affects all FlexIDX Home Search plugin versions up to and including 2.1.2. Because the injected script executes in a changed security scope, the impact extends beyond the vulnerable component itself.
Critical Impact
Authenticated attackers can inject persistent JavaScript that executes when other users, including administrators, view affected pages, enabling session hijacking, credential theft, and unauthorized administrative actions.
Affected Products
- Max Chirkov FlexIDX Home Search plugin for WordPress
- All versions through 2.1.2
- WordPress sites using the plugin in default configuration
Discovery Timeline
- 2025-02-07 - CVE-2025-25082 published to the National Vulnerability Database (NVD)
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-25082
Vulnerability Analysis
The vulnerability is a stored XSS flaw categorized under [CWE-79]: Improper Neutralization of Input During Web Page Generation. The FlexIDX Home Search plugin accepts input from an authenticated user and stores it without proper sanitization or output encoding. When the stored content is rendered back to the browser, the attacker-controlled payload executes as active script content in the origin of the WordPress site.
The scope change indicated in the CVSS vector means the injected script runs against resources beyond the vulnerable plugin itself. In WordPress environments, this typically translates to actions performed under an administrator's session when they view an affected page. Attackers require low privileges and user interaction to trigger execution.
Root Cause
The plugin fails to apply context-aware output escaping and does not sanitize input on storage. WordPress provides escaping functions such as esc_html(), esc_attr(), and wp_kses() for this purpose. The absence of these controls in the affected code paths of FlexIDX Home Search up to version 2.1.2 allows script tags and event handler attributes to survive both storage and rendering.
Attack Vector
Exploitation follows a standard stored XSS pattern. An authenticated attacker submits crafted input through a form or field exposed by the plugin. The payload is written to the WordPress database. When a victim, typically an administrator, loads the page rendering that content, the payload executes in the victim's browser session.
Because no verified proof-of-concept has been published for CVE-2025-25082, technical specifics of the injectable field are documented in the Patchstack XSS Vulnerability Report. Consult the advisory for the affected parameter and payload structure.
Detection Methods for CVE-2025-25082
Indicators of Compromise
- Database entries in wp_posts, wp_postmeta, or plugin-specific tables containing <script> tags, javascript: URIs, or DOM event handler attributes such as onerror= and onload=.
- Unexpected outbound HTTP requests from administrator browsers to attacker-controlled domains shortly after loading FlexIDX pages.
- New administrator accounts or unauthorized privilege changes created without corresponding authenticated admin activity in access logs.
Detection Strategies
- Audit stored plugin content for HTML-encoded and raw script payloads using WordPress database queries against fields written by FlexIDX Home Search.
- Deploy a Web Application Firewall (WAF) rule that blocks script tags and event handler attributes in requests targeting FlexIDX plugin endpoints.
- Enable Content Security Policy (CSP) reporting to surface inline script execution attempts on pages rendered by the plugin.
Monitoring Recommendations
- Monitor WordPress administrator sessions for anomalous API calls, particularly to /wp-admin/ endpoints that create users or modify roles.
- Alert on modifications to plugin-managed content by low-privileged accounts.
- Track access to plugin configuration and content pages for patterns consistent with XSS reconnaissance.
How to Mitigate CVE-2025-25082
Immediate Actions Required
- Disable the FlexIDX Home Search plugin on all WordPress sites until a patched version is confirmed available.
- Review the WordPress database for stored payloads and remove any suspicious script content from plugin-managed fields.
- Rotate credentials and force password resets for administrator accounts that accessed affected pages during the exposure window.
Patch Information
No patched version beyond 2.1.2 is referenced in the available advisory data. Consult the Patchstack XSS Vulnerability Report for updates on vendor remediation. Apply any FlexIDX Home Search release above 2.1.2 when made available.
Workarounds
- Restrict access to FlexIDX Home Search input fields to trusted user roles only by adjusting WordPress role capabilities.
- Deploy a WAF signature that blocks HTML tags and event handler attributes in requests to plugin endpoints.
- Enforce a strict Content Security Policy that disallows inline scripts and untrusted script sources on pages rendered by the plugin.
# Content Security Policy header example for WordPress (via .htaccess)
Header set Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'; base-uri 'self'; frame-ancestors 'self'"
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
