CVE-2024-29102
📋 TL;DR
This vulnerability allows attackers to inject malicious scripts into web pages generated by the Extensions For CF7 WordPress plugin. When users view affected pages, the scripts execute in their browsers, potentially stealing credentials or performing unauthorized actions. All WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- HasThemes Extensions For CF7 WordPress plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator credentials, take over the WordPress site, deface pages, or redirect users to malicious sites, potentially compromising the entire web server if combined with other vulnerabilities.
Likely Case
Attackers inject malicious JavaScript to steal user session cookies, redirect users to phishing sites, or perform actions on behalf of authenticated users without their knowledge.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before reaching users, preventing execution while maintaining plugin functionality.
🎯 Exploit Status
The vulnerability is unauthenticated and requires minimal technical skill to exploit. Public proof-of-concept details are available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.0.7 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Extensions For CF7' and click 'Update Now'. 4. Verify the plugin version is 3.0.7 or higher.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily deactivate the Extensions For CF7 plugin until patched
wp plugin deactivate extensions-for-cf7
Implement WAF rules
allConfigure web application firewall to block XSS payloads targeting CF7 forms
🧯 If You Can't Patch
- Remove or disable the Extensions For CF7 plugin entirely
- Implement strict Content Security Policy headers to mitigate script execution
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for Extensions For CF7 version 3.0.6 or earlierCheck Version:
wp plugin get extensions-for-cf7 --field=versionVerify Fix Applied:
Verify plugin version is 3.0.7 or higher in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to CF7 form handlers with script tags
- Multiple failed login attempts following suspicious form submissions
Network Indicators:
- HTTP requests containing JavaScript payloads in form fields
- Unexpected redirects from CF7 form pages
SIEM Query:
source="wordpress.log" AND ("extensions-for-cf7" OR "contact-form-7") AND ("script" OR "javascript:" OR "onerror=" OR "onload=")🔗 References
- https://patchstack.com/database/vulnerability/extensions-for-cf7/wordpress-extensions-for-cf7-plugin-3-0-6-unauthenticated-cross-site-scripting-xss-vulnerability?_s_id=cve
- https://patchstack.com/database/vulnerability/extensions-for-cf7/wordpress-extensions-for-cf7-plugin-3-0-6-unauthenticated-cross-site-scripting-xss-vulnerability?_s_id=cve
