CVE-2025-30970: Easy Contact Plugin XSS Vulnerability

CVE-2025-30970 Overview

CVE-2025-30970 is a Reflected Cross-Site Scripting (XSS) vulnerability affecting the Easy Contact plugin for WordPress, developed by scottwallick. This vulnerability arises from improper neutralization of user input during web page generation, allowing attackers to inject malicious scripts that execute in the context of a victim's browser session.

Reflected XSS vulnerabilities like this one are particularly dangerous in WordPress environments because they can be used to steal session cookies, hijack administrator accounts, deface websites, or redirect users to malicious sites. An attacker can craft a malicious URL containing the XSS payload and trick authenticated users into clicking it, potentially compromising the entire WordPress installation.

Critical Impact

Attackers can execute arbitrary JavaScript in the context of authenticated WordPress users, potentially leading to session hijacking, administrative account takeover, or website defacement.

Affected Products

• Easy Contact WordPress Plugin version 0.1.2 and earlier
• WordPress installations using vulnerable Easy Contact plugin versions

Discovery Timeline

• 2025-04-15 - CVE-2025-30970 published to NVD
• 2026-04-15 - Last updated in NVD database

Technical Details for CVE-2025-30970

Vulnerability Analysis

This vulnerability is classified under CWE-79 (Improper Neutralization of Input During Web Page Generation), commonly known as Cross-Site Scripting. The Easy Contact plugin fails to properly sanitize user-supplied input before reflecting it back to the user's browser, creating an opportunity for script injection.

In Reflected XSS attacks, the malicious payload is typically embedded in a URL parameter or form field. When a victim clicks the crafted link or submits the manipulated form, the server includes the unsanitized input in its response, causing the browser to execute the attacker's JavaScript code within the security context of the vulnerable website.

The exploitation requires user interaction—specifically, the victim must click on a malicious link or be redirected to a crafted URL. However, this is often achievable through phishing emails, social media posts, or compromised third-party sites that redirect to the malicious URL.

Root Cause

The root cause of this vulnerability is inadequate input validation and output encoding within the Easy Contact plugin. WordPress plugins that handle user input must implement proper sanitization using WordPress's built-in escaping functions such as esc_html(), esc_attr(), esc_url(), and wp_kses(). The Easy Contact plugin versions through 0.1.2 fail to apply these protective measures to one or more input parameters before rendering them in the page output.

Attack Vector

The attack vector for this Reflected XSS vulnerability involves crafting a malicious URL that contains JavaScript code in a vulnerable parameter. When an authenticated WordPress user—particularly an administrator—clicks this link, the malicious script executes with their privileges.

Typical exploitation scenarios include:

1. Session Hijacking: The injected script steals session cookies and transmits them to an attacker-controlled server
2. Credential Theft: A fake login form is injected to harvest administrator credentials
3. Website Defacement: Malicious content is injected into the page visible to the victim
4. Privilege Escalation: Administrative actions are performed on behalf of the victim without their knowledge

The vulnerability can be triggered by sending a victim a crafted URL containing the XSS payload targeting the Easy Contact plugin's vulnerable parameter. For detailed technical information about the exploitation mechanism, refer to the Patchstack Vulnerability Report.

Detection Methods for CVE-2025-30970

Indicators of Compromise

• Unusual JavaScript execution or unexpected behavior on pages utilizing the Easy Contact plugin
• HTTP access logs showing requests with encoded script tags or JavaScript event handlers in URL parameters
• Reports from users about unexpected redirects or pop-ups when accessing contact pages
• Web Application Firewall (WAF) logs indicating blocked XSS attempts targeting Easy Contact endpoints

Detection Strategies

• Deploy web application firewall rules to detect and block XSS payloads in HTTP requests targeting WordPress installations
• Monitor server access logs for suspicious URL patterns containing <script>, javascript:, onerror=, onload=, or other XSS indicators
• Implement Content Security Policy (CSP) headers and monitor CSP violation reports for unauthorized script execution attempts
• Use WordPress security plugins that scan for known vulnerabilities and suspicious plugin behavior

Monitoring Recommendations

• Enable verbose logging on your WordPress installation and review logs regularly for anomalous requests
• Configure alerting for any successful login attempts following visits to pages with unusual URL parameters
• Monitor for changes to WordPress user accounts, especially privilege escalations or new administrator accounts
• Track plugin file integrity to detect any unauthorized modifications

How to Mitigate CVE-2025-30970

Immediate Actions Required

• Deactivate and remove the Easy Contact plugin (easy-contact) from all WordPress installations immediately
• Audit WordPress user accounts for any unauthorized changes or newly created administrator accounts
• Review server access logs for evidence of exploitation attempts
• Consider implementing a Web Application Firewall with XSS protection rules

Patch Information

As of the latest NVD update, the Easy Contact plugin versions through 0.1.2 remain vulnerable. No patched version has been identified in the available data. Website administrators should:

1. Remove the vulnerable plugin from their WordPress installations
2. Monitor the Patchstack Vulnerability Report for updates on patched versions
3. Consider alternative contact form plugins with active maintenance and security support

Workarounds

• Completely deactivate and uninstall the Easy Contact plugin until a security patch is available
• Implement strict Content Security Policy (CSP) headers to mitigate the impact of XSS vulnerabilities
• Deploy a Web Application Firewall (WAF) with XSS filtering capabilities
• Use WordPress security plugins like Wordfence or Sucuri to add additional protection layers

# Add Content Security Policy headers in .htaccess (Apache)
<IfModule mod_headers.c>
    Header set Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline';"
    Header set X-XSS-Protection "1; mode=block"
    Header set X-Content-Type-Options "nosniff"
</IfModule>