CVE-2024-12341
📋 TL;DR
The Custom Skins Contact Form 7 WordPress plugin has a missing capability check vulnerability that allows authenticated users with Subscriber-level access or higher to modify any post content and create new skins. This affects all WordPress sites using this plugin up to version 1.0. Attackers need at least a basic WordPress account to exploit this vulnerability.
💻 Affected Systems
- Custom Skins Contact Form 7 WordPress plugin
⚠️ 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.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
An attacker could deface the entire website by modifying all posts, inject malicious content, or create backdoors through new skins that could lead to complete site compromise.
Likely Case
Attackers with subscriber accounts modify posts to insert spam links, malicious redirects, or deface content, potentially damaging site reputation and SEO.
If Mitigated
With proper user account controls and monitoring, impact is limited to content modification without escalation to administrative privileges.
🎯 Exploit Status
Exploitation requires authenticated access but is technically simple once an account is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.0.1
Vendor Advisory: https://plugins.trac.wordpress.org/changeset/3151235/custom-skins-contact-form-7/trunk/custom-skins-contact-form-7.php
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Custom Skins Contact Form 7'. 4. Click 'Update Now' if available, or manually update to version 1.0.1. 5. Verify the plugin is updated to 1.0.1 or later.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily disable the Custom Skins Contact Form 7 plugin until patched
wp plugin deactivate custom-skins-contact-form-7
Restrict user registration
allDisable new user registration to prevent attackers from obtaining accounts
Settings → General → Membership: Uncheck 'Anyone can register'
🧯 If You Can't Patch
- Implement strict user account controls and review all existing user accounts
- Enable comprehensive logging and monitoring for post modification activities
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Custom Skins Contact Form 7 → Version. If version is 1.0 or earlier, you are vulnerable.Check Version:
wp plugin get custom-skins-contact-form-7 --field=versionVerify Fix Applied:
Verify plugin version is 1.0.1 or later in WordPress admin panel → Plugins.📡 Detection & Monitoring
Log Indicators:
- Unusual post modifications by non-admin users
- Multiple POST requests to /wp-admin/admin-ajax.php with cf7cs_action_callback parameter
Network Indicators:
- HTTP POST requests to admin-ajax.php with cf7cs_action_callback action from non-admin IPs
SIEM Query:
source="wordpress.log" AND (action="edit_post" OR uri="/wp-admin/admin-ajax.php") AND user_role!="administrator" AND parameters CONTAINS "cf7cs_action_callback"