CVE-2024-56003
📋 TL;DR
CVE-2024-56003 is a missing authorization vulnerability in the Caldera SMTP Mailer WordPress plugin that allows attackers to perform unauthorized actions without proper authentication. This affects all WordPress sites running Caldera SMTP Mailer versions up to 1.0.1. The vulnerability enables privilege escalation and unauthorized access to plugin functionality.
💻 Affected Systems
- Caldera SMTP Mailer 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
Attackers could gain administrative access to WordPress sites, modify SMTP settings to intercept emails, or take full control of affected websites.
Likely Case
Unauthorized users could modify SMTP configuration, potentially enabling email interception or using the site for spam campaigns.
If Mitigated
With proper access controls and network segmentation, impact would be limited to the specific plugin functionality.
🎯 Exploit Status
Missing authorization vulnerabilities typically require minimal technical skill to exploit once discovered.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.0.2 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Caldera SMTP Mailer and click 'Update Now'. 4. Verify plugin version is 1.0.2 or higher.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily disable the Caldera SMTP Mailer plugin until patched
wp plugin deactivate caldera-smtp-mailer
Restrict plugin access
allUse WordPress security plugins to restrict access to plugin admin pages
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block unauthorized access to plugin endpoints
- Enable WordPress security hardening measures and limit user privileges
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for Caldera SMTP Mailer versionCheck Version:
wp plugin get caldera-smtp-mailer --field=versionVerify Fix Applied:
Verify plugin version is 1.0.2 or higher in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to /wp-admin/admin.php?page=caldera-smtp-mailer
- Unexpected SMTP configuration changes
Network Indicators:
- Unusual POST requests to plugin admin endpoints from unauthenticated sources
SIEM Query:
source="wordpress.log" AND (uri_path="/wp-admin/admin.php" AND query_string="*caldera-smtp-mailer*") AND user="-"