CVE-2022-46818
📋 TL;DR
CVE-2022-46818 is an SQL injection vulnerability in the WordPress 'Email posts to subscribers' plugin. It allows attackers to execute arbitrary SQL commands on the database through the plugin's functionality. This affects all WordPress sites using the plugin from any version up to and including 6.2.
💻 Affected Systems
- WordPress Email posts to subscribers plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, data manipulation, privilege escalation, and potential remote code execution via database functions.
Likely Case
Data exfiltration including user credentials, sensitive content, and potential site takeover through admin account compromise.
If Mitigated
Limited impact with proper input validation, parameterized queries, and database user privilege restrictions.
🎯 Exploit Status
SQL injection vulnerabilities in WordPress plugins are commonly exploited in the wild.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 6.3 or later
Vendor Advisory: https://patchstack.com/database/vulnerability/email-posts-to-subscribers/wordpress-email-posts-to-subscribers-plugin-6-2-sql-injection
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Email posts to subscribers'. 4. Click 'Update Now' if available. 5. If no update available, deactivate and delete the plugin.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily deactivate the Email posts to subscribers plugin until patched
wp plugin deactivate email-posts-to-subscribers
Web Application Firewall rule
allImplement WAF rules to block SQL injection patterns targeting the plugin
🧯 If You Can't Patch
- Implement strict input validation and sanitization for all plugin parameters
- Restrict database user permissions to minimum required for plugin functionality
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for 'Email posts to subscribers' version 6.2 or earlierCheck Version:
wp plugin get email-posts-to-subscribers --field=versionVerify Fix Applied:
Verify plugin version is 6.3 or later in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed login attempts from single IP
- Unexpected plugin file modifications
Network Indicators:
- SQL injection patterns in HTTP requests to WordPress endpoints
- Unusual outbound database connections
SIEM Query:
source="web_server" AND ("email-posts-to-subscribers" OR "wp-json") AND ("UNION" OR "SELECT" OR "INSERT" OR "DELETE" OR "UPDATE" OR "--" OR "' OR '1'='1")