CVE-2024-56060

7.1 HIGH

📋 TL;DR

This vulnerability allows attackers to inject malicious scripts into HTML Forms plugin pages, which execute in victims' browsers when they visit manipulated links. It affects all WordPress sites using HTML Forms plugin versions up to 1.4.1. Attackers can steal session cookies, redirect users, or perform actions on their behalf.

💻 Affected Systems

Products:
  • HTML Forms WordPress Plugin
Versions: All versions up to and including 1.4.1
Operating Systems: Any OS running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: Vulnerability exists in default plugin configuration; no special settings required for exploitation.

⚠️ Manual Verification Required

This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.

Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).

🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.

Recommended Actions:
  1. Review the CVE details at NVD
  2. Check vendor security advisories for your specific version
  3. Test if the vulnerability is exploitable in your environment
  4. Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

Attackers steal administrator session cookies, gain full control of WordPress site, install backdoors, deface website, or steal sensitive user data.

🟠

Likely Case

Attackers steal user session cookies to hijack accounts, redirect users to phishing sites, or perform limited actions within user permissions.

🟢

If Mitigated

With proper input validation and output encoding, malicious scripts are neutralized before reaching user browsers, preventing execution.

🌐 Internet-Facing: HIGH - WordPress sites are typically internet-facing, and reflected XSS requires victims to click malicious links, which is common via phishing.
🏢 Internal Only: MEDIUM - Internal users could still be targeted via internal phishing, but attack surface is smaller than internet-facing.

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: MEDIUM

Exploitation requires crafting malicious URLs with XSS payloads and tricking users into clicking them. No authentication bypass needed.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Version after 1.4.1 (check plugin repository for latest)

Vendor Advisory: https://patchstack.com/database/wordpress/plugin/html-forms/vulnerability/wordpress-html-forms-plugin-1-4-1-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find HTML Forms plugin. 4. Click 'Update Now' if update available. 5. Alternatively, download latest version from WordPress plugin repository and manually update.

🔧 Temporary Workarounds

Input Sanitization

all

Implement server-side input validation and output encoding for all user inputs in HTML Forms plugin code.

Content Security Policy (CSP)

all

Deploy CSP headers to restrict script execution sources, mitigating XSS impact even if exploitation occurs.

🧯 If You Can't Patch

  • Disable HTML Forms plugin temporarily until patched.
  • Implement web application firewall (WAF) rules to block XSS payload patterns.

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin → Plugins → Installed Plugins for HTML Forms version. If version is 1.4.1 or lower, site is vulnerable.

Check Version:

wp plugin list --name=html-forms --field=version (if WP-CLI installed)

Verify Fix Applied:

After update, verify HTML Forms plugin version is above 1.4.1 in WordPress plugins list.

📡 Detection & Monitoring

Log Indicators:

  • Unusual GET requests with script tags or JavaScript in query parameters to HTML Forms pages.
  • Multiple failed login attempts or unauthorized actions from unexpected user sessions.

Network Indicators:

  • HTTP requests containing <script>, javascript:, or encoded XSS payloads in URLs.

SIEM Query:

source="web_logs" AND (uri="*html-forms*" AND (query="*<script>*" OR query="*javascript:*"))

🔗 References

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