CVE-2025-23675
📋 TL;DR
This CSRF vulnerability in the Import Users to MailChimp WordPress plugin allows attackers to trick authenticated administrators into performing unintended actions, which can lead to stored cross-site scripting (XSS). Attackers can inject malicious scripts that execute when other users visit affected pages. This affects all WordPress sites using the plugin version 1.0 or earlier.
💻 Affected Systems
- Import Users to MailChimp 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 compromise administrator accounts, inject persistent malicious scripts that steal session cookies or credentials from all visitors, deface websites, or redirect users to malicious sites.
Likely Case
Attackers would typically inject malicious JavaScript to steal administrator session cookies, potentially gaining full control of the WordPress site.
If Mitigated
With proper CSRF protections and content security policies, the attack would fail or have limited impact even if attempted.
🎯 Exploit Status
Exploitation requires social engineering to trick an authenticated administrator into clicking a malicious link while logged into WordPress admin.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 1.0 (check plugin repository for latest)
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Import Users to MailChimp'. 4. Click 'Update Now' if available. 5. If no update is available, deactivate and delete the plugin immediately.
🔧 Temporary Workarounds
Deactivate Plugin
WordPressTemporarily disable the vulnerable plugin until a patch is available
wp plugin deactivate import-users-to-mailchimp
Implement CSRF Protection
WordPressAdd WordPress nonce verification to plugin forms if custom patching is possible
Add wp_nonce_field() and wp_verify_nonce() to plugin form handling
🧯 If You Can't Patch
- Remove the Import Users to MailChimp plugin completely from your WordPress installation
- Implement strict Content Security Policy (CSP) headers to mitigate XSS impact
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for 'Import Users to MailChimp' version 1.0 or earlierCheck Version:
wp plugin get import-users-to-mailchimp --field=versionVerify Fix Applied:
Verify plugin is either updated to version after 1.0 or completely removed from plugins directory📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to wp-admin/admin.php with import-users-to-mailchimp parameters
- Multiple failed nonce verification attempts in WordPress debug logs
Network Indicators:
- Unexpected outbound connections from WordPress site after administrator visits suspicious links
SIEM Query:
source="wordpress.log" AND ("import-users-to-mailchimp" OR "CSRF" OR "nonce")