CVE-2024-27968
📋 TL;DR
A Cross-Site Request Forgery (CSRF) vulnerability in the Optimole Super Page Cache for Cloudflare WordPress plugin allows attackers to perform stored cross-site scripting (XSS) attacks. This affects WordPress sites using vulnerable versions of the plugin. Attackers can trick authenticated administrators into executing malicious actions that inject harmful scripts.
💻 Affected Systems
- Optimole Super Page Cache for Cloudflare WordPress plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could inject malicious JavaScript that steals administrator credentials, hijacks sessions, defaces websites, or installs backdoors, potentially leading to complete site compromise.
Likely Case
Attackers create fake admin pages or emails that trick logged-in administrators into clicking malicious links, resulting in stored XSS payloads being injected into the site.
If Mitigated
With proper CSRF tokens and input validation, the attack vector is blocked, preventing unauthorized actions even if administrators are tricked.
🎯 Exploit Status
Exploitation requires social engineering to trick authenticated users, but the technical execution is straightforward once the user is deceived.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.7.6 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Super Page Cache for Cloudflare' and click 'Update Now'. 4. Verify the plugin version is 4.7.6 or higher.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily deactivate the vulnerable plugin until patched.
wp plugin deactivate wp-cloudflare-page-cache
Implement CSRF Protection
allAdd custom CSRF tokens to plugin forms if you cannot update immediately.
🧯 If You Can't Patch
- Restrict plugin access to trusted administrators only and monitor for suspicious activity.
- Implement web application firewall (WAF) rules to block CSRF and XSS payloads targeting the plugin endpoints.
🔍 How to Verify
Check if Vulnerable:
Check the plugin version in WordPress admin under Plugins > Installed Plugins. If version is 4.7.5 or lower, it is vulnerable.Check Version:
wp plugin get wp-cloudflare-page-cache --field=versionVerify Fix Applied:
After updating, confirm the plugin version is 4.7.6 or higher in the same location.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to plugin admin endpoints without referrer headers or CSRF tokens
- JavaScript injection in plugin settings or cache-related data
Network Indicators:
- HTTP requests to /wp-admin/admin.php?page=wp-cloudflare-page-cache with suspicious parameters
SIEM Query:
source="wordpress" AND (uri_path="/wp-admin/admin.php" AND query="page=wp-cloudflare-page-cache") AND (method="POST" AND NOT referrer="*wp-admin*")🔗 References
- https://patchstack.com/database/vulnerability/wp-cloudflare-page-cache/wordpress-super-page-cache-for-cloudflare-plugin-4-7-5-cross-site-request-forgery-csrf-to-xss-vulnerability?_s_id=cve
- https://patchstack.com/database/vulnerability/wp-cloudflare-page-cache/wordpress-super-page-cache-for-cloudflare-plugin-4-7-5-cross-site-request-forgery-csrf-to-xss-vulnerability?_s_id=cve
