PLUGIN SECURITY
Is Mailchimp For Wp safe?
The #1 Mailchimp plugin for WordPress. Allows you to add a multitude of newsletter sign-up methods to your site.
What this plugin does
- Slug:
mailchimp-for-wp - Author: Danny van Kooten
- 1000000+ active installs
- 96/100 rating (1497 reviews on wordpress.org)
- 78502910 all-time downloads
- On WordPress.org since 2013-06-19
emailformmailchimpnewslettersubscribe
Maintenance status
- Latest known version: 4.14.0
- Last updated: 2026-09-16 7:31am GMT
- Tested up to WordPress: 7.1.3
- Requires PHP: 7.4+
- Max supported PHP (analyzed): 8.4
Known vulnerabilities
8 known CVEs on file for Mailchimp For Wp.
| CVE | Vulnerability | Type | Severity | Affected | Fixed in | Published | Status |
|---|---|---|---|---|---|---|---|
| CVE-2026-87917 | MC4WP: Mailchimp for WordPress [mailchimp-for-wp] < 4.14.1 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | Medium 6.1 | < 4.14.1 | 4.14.1 | 2026-08-21 | ⚠ update needed |
| CVE-2026-4561 | MC4WP: Mailchimp for WordPress [mailchimp-for-wp] < 4.12.1 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | Medium 6.4 | < 4.12.1 | 4.12.1 | 2026-03-10 | ✓ fixed in latest |
| CVE-2024-8680 | MC4WP: Mailchimp for WordPress [mailchimp-for-wp] < 4.9.17 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | Medium 5.5 | < 4.9.17 | 4.9.17 | 2024-09-20 | ✓ fixed in latest |
| CVE-2024-8850 | MC4WP: Mailchimp for WordPress [mailchimp-for-wp] >= 4.9.9 - <= 4.9.16 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | Medium 6.1 | 4.9.9–4.9.16 | 4.9.16 | 2024-09-18 | ✓ fixed in latest |
| CVE-2023-51682 | MC4WP: Mailchimp for WordPress [mailchimp-for-wp] < 4.9.10 | Missing Authorization | Medium 5.3 | < 4.9.10 | 4.9.10 | 2023-12-27 | ✓ fixed in latest |
| CVE-2021-36833 | MC4WP: Mailchimp for WordPress [mailchimp-for-wp] < 4.8.7 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | Medium 4.8 | < 4.8.7 | 4.8.7 | 2022-03-02 | ✓ fixed in latest |
| — | MC4WP: Mailchimp for WordPress [mailchimp-for-wp] < 4.8.7 | — | Unknown | < 4.8.7 | 4.8.7 | 2022-03-02 | ✓ fixed in latest |
| — | MC4WP: Mailchimp for WordPress [mailchimp-for-wp] < 4.8.5 | — | Unknown | < 4.8.5 | 4.8.5 | 2021-06-01 | ✓ fixed in latest |
+ 12 more known vulnerabilities
| CVE | Vulnerability | Type | Severity | Affected | Fixed in | Published | Status |
|---|---|---|---|---|---|---|---|
| — | MC4WP: Mailchimp for WordPress [mailchimp-for-wp] < 4.8.5 | — | Unknown | < 4.8.5 | 4.8.5 | 2021-06-01 | ✓ fixed in latest |
| — | MC4WP: Mailchimp for WordPress [mailchimp-for-wp] < 4.8.5 | — | Unknown | < 4.8.5 | 4.8.5 | 2021-06-01 | ✓ fixed in latest |
| — | MC4WP: Mailchimp for WordPress [mailchimp-for-wp] < 4.8.5 | — | Unknown | < 4.8.5 | 4.8.5 | 2021-06-01 | ✓ fixed in latest |
| — | MC4WP: Mailchimp for WordPress [mailchimp-for-wp] < 4.1.7 | — | Unknown | < 4.1.7 | 4.1.7 | 2019-11-09 | ✓ fixed in latest |
| CVE-2017-18577 | MC4WP: Mailchimp for WordPress [mailchimp-for-wp] < 4.1.8 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | Medium 6.1 | < 4.1.8 | 4.1.8 | 2017-09-08 | ✓ fixed in latest |
| CVE-2016-10871 | MC4WP: Mailchimp for WordPress [mailchimp-for-wp] < 4.0.11 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | Medium 6.1 | < 4.0.11 | 4.0.11 | 2016-12-13 | ✓ fixed in latest |
| — | MC4WP: Mailchimp for WordPress [mailchimp-for-wp] < 4.0.11 | — | Unknown | < 4.0.11 | 4.0.11 | 2016-12-09 | ✓ fixed in latest |
| — | MC4WP: Mailchimp for WordPress [mailchimp-for-wp] < 4.12.0 | — | Unknown | < 4.12.0 | 4.12.0 | 0000-00-00 | ✓ fixed in latest |
| — | MC4WP: Mailchimp for WordPress [mailchimp-for-wp] < 4.8.7 | — | Unknown | < 4.8.7 | 4.8.7 | — | ✓ fixed in latest |
| — | MC4WP: Mailchimp for WordPress [mailchimp-for-wp] < 4.8.5 | — | Unknown | < 4.8.5 | 4.8.5 | — | ✓ fixed in latest |
| — | MC4WP: Mailchimp for WordPress [mailchimp-for-wp] < 4.8.5 | — | Unknown | < 4.8.5 | 4.8.5 | — | ✓ fixed in latest |
| — | MC4WP: Mailchimp for WordPress [mailchimp-for-wp] < 4.1.7 | — | Unknown | < 4.1.7 | 4.1.7 | — | ✓ fixed in latest |
How to fix it
Keep Mailchimp For Wp updated — 4.14.0 is the latest version on wordpress.org, and each CVE above lists the exact release that fixed it ("Fixed in").
This is the plugin's full known vulnerability history, not a scan of any specific installation — run a free scan of your own site to check your exact installed version.
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Check your own WordPress site
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