CVE-2024-54223

5.3 MEDIUM

📋 TL;DR

This vulnerability allows attackers to inject malicious scripts into web forms created with the ARForms Form Builder WordPress plugin. When exploited, it enables cross-site scripting (XSS) attacks that can steal user sessions, redirect users, or deface websites. All WordPress sites using ARForms Form Builder versions up to 1.7.1 are affected.

💻 Affected Systems

Products:
  • ARForms Form Builder WordPress Plugin
Versions: All versions up to and including 1.7.1
Operating Systems: Any OS running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: All installations with vulnerable versions are affected regardless of configuration. The vulnerability exists in the form builder functionality.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Attackers could steal administrator credentials, take over the WordPress site, install backdoors, or redirect all visitors to malicious sites.

🟠

Likely Case

Attackers inject malicious JavaScript to steal user session cookies, redirect users to phishing pages, or display unwanted content on the site.

🟢

If Mitigated

With proper input validation and output encoding, the injected scripts would be rendered harmless as plain text rather than executable code.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ⚠️ Yes
Weaponized: LIKELY
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

Basic XSS vulnerabilities are commonly exploited and require minimal technical skill. The vulnerability is in publicly accessible web forms.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 1.7.2 or later

Vendor Advisory: https://patchstack.com/database/wordpress/plugin/arforms-form-builder/vulnerability/wordpress-arforms-plugin-1-7-1-html-injection-vulnerability?_s_id=cve

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find ARForms Form Builder. 4. Click 'Update Now' if update is available. 5. Alternatively, download version 1.7.2+ from WordPress repository and manually update.

🔧 Temporary Workarounds

Disable ARForms Plugin

all

Temporarily disable the vulnerable plugin until patched

wp plugin deactivate arforms-form-builder

Implement WAF Rules

all

Add web application firewall rules to block XSS payloads in form submissions

🧯 If You Can't Patch

  • Implement strict Content Security Policy (CSP) headers to prevent script execution
  • Use a web application firewall (WAF) with XSS protection rules enabled

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin → Plugins → ARForms Form Builder version. If version is 1.7.1 or lower, you are vulnerable.

Check Version:

wp plugin get arforms-form-builder --field=version

Verify Fix Applied:

Verify ARForms Form Builder version is 1.7.2 or higher in WordPress plugins page.

📡 Detection & Monitoring

Log Indicators:

  • Unusual POST requests to form submission endpoints containing script tags or JavaScript code
  • Multiple failed form submissions with encoded payloads

Network Indicators:

  • HTTP requests with script tags in form field parameters
  • Unusual outbound connections after form submissions

SIEM Query:

source="wordpress.log" AND ("script" OR "javascript:" OR "onerror=" OR "onload=") AND "POST /wp-admin/admin-ajax.php"

🔗 References

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