CVE-2025-68989

7.5 HIGH

📋 TL;DR

This vulnerability in the Contact Form 7 Extension For Mailchimp WordPress plugin exposes sensitive data embedded in form submissions. Attackers can retrieve confidential information sent through contact forms. All WordPress sites using vulnerable versions of this plugin are affected.

💻 Affected Systems

Products:
  • Contact Form 7 Extension For Mailchimp
Versions: n/a through <= 0.9.49
Operating Systems: All
Default Config Vulnerable: ⚠️ Yes
Notes: Requires WordPress with Contact Form 7 and the vulnerable Mailchimp extension installed and active.

⚠️ 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.

Recommended Actions:
  1. Review the CVE details at NVD
  2. Check vendor security advisories for your specific version
  3. Test if the vulnerability is exploitable in your environment
  4. Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete exposure of all sensitive data submitted through contact forms, including personal information, credentials, or confidential business data.

🟠

Likely Case

Exposure of personal identifiable information (PII), email addresses, and form submission contents to unauthorized parties.

🟢

If Mitigated

Limited data exposure if forms don't collect sensitive information or if additional encryption layers are implemented.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: LIKELY
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

CWE-201 suggests information exposure through sent data, making exploitation straightforward once the vulnerability is understood.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: >0.9.49

Vendor Advisory: https://patchstack.com/database/Wordpress/Plugin/contact-form-7-mailchimp-extension/vulnerability/wordpress-contact-form-7-extension-for-mailchimp-plugin-0-9-49-sensitive-data-exposure-vulnerability?_s_id=cve

Restart Required: No

Instructions:

1. Log into WordPress admin panel
2. Navigate to Plugins → Installed Plugins
3. Find 'Contact Form 7 Extension For Mailchimp'
4. Click 'Update Now' if available
5. If no update appears, manually download latest version from WordPress repository
6. Deactivate, delete old version, upload new version, activate

🔧 Temporary Workarounds

Disable vulnerable plugin

all

Temporarily deactivate the Contact Form 7 Extension For Mailchimp plugin until patched

wp plugin deactivate contact-form-7-mailchimp-extension

Remove sensitive form fields

all

Modify contact forms to remove any fields collecting sensitive information

🧯 If You Can't Patch

  • Implement web application firewall (WAF) rules to block suspicious form submissions
  • Enable additional encryption for form data transmission and storage

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin → Plugins → Installed Plugins for 'Contact Form 7 Extension For Mailchimp' version <=0.9.49

Check Version:

wp plugin get contact-form-7-mailchimp-extension --field=version

Verify Fix Applied:

Confirm plugin version is >0.9.49 in WordPress admin panel

📡 Detection & Monitoring

Log Indicators:

  • Unusual form submission patterns
  • Multiple failed form submissions from same IP
  • Access to form data endpoints without proper authentication

Network Indicators:

  • Unencrypted transmission of form data
  • Sensitive data in HTTP requests/responses
  • Traffic to Mailchimp API endpoints with exposed parameters

SIEM Query:

source="wordpress.log" AND "contact-form-7-mailchimp-extension" AND ("sensitive" OR "exposure" OR "data leak")

🔗 References

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