CVE-2025-23423
📋 TL;DR
This CVE describes a Missing Authorization vulnerability in the SendGrid for WordPress plugin that allows attackers to exploit incorrectly configured access control security levels. Attackers could potentially perform unauthorized actions due to broken access controls. This affects all WordPress sites using SendGrid for WordPress plugin versions up to and including 1.4.
💻 Affected Systems
- SendGrid for WordPress
- WP SendGrid Mailer
⚠️ 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 modify plugin settings, potentially intercepting or manipulating email communications sent through SendGrid, or gaining unauthorized administrative access to plugin functionality.
Likely Case
Unauthorized users could access plugin configuration pages or modify settings they shouldn't have access to, potentially disrupting email functionality or exposing configuration details.
If Mitigated
With proper access controls and authentication checks, only authorized administrators can access plugin functionality, limiting impact to configuration changes by legitimate users.
🎯 Exploit Status
Exploitation requires some level of access to the WordPress site, but the vulnerability bypasses intended authorization checks.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.5 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'SendGrid for WordPress' or 'WP SendGrid Mailer'. 4. Click 'Update Now' if update is available. 5. Alternatively, download version 1.5+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily disable the SendGrid for WordPress plugin until patched
wp plugin deactivate wp-sendgrid-mailer
Restrict plugin access
allUse WordPress role management to restrict who can access plugin settings
🧯 If You Can't Patch
- Implement strict access controls using WordPress roles and capabilities to limit who can access plugin settings
- Monitor plugin access logs and set up alerts for unauthorized access attempts to plugin functionality
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin > Plugins > Installed Plugins for 'SendGrid for WordPress' or 'WP SendGrid Mailer' version 1.4 or earlierCheck Version:
wp plugin get wp-sendgrid-mailer --field=versionVerify Fix Applied:
Verify plugin version is 1.5 or later in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to /wp-admin/admin.php?page=wp-sendgrid-mailer or similar plugin admin pages
- Unexpected modifications to SendGrid plugin settings
Network Indicators:
- Unusual API calls to SendGrid from WordPress instance
- Changes to email sending patterns
SIEM Query:
source="wordpress" AND (uri_path="/wp-admin/admin.php" AND query_string="*sendgrid*" AND user_role!="administrator")