MC4WP <= 4.9.9 - Missing Authorization via listen

5.3
Missing Authorization
CVE CVE-2023-51682
CVSS 5.3 (Medium)
Publicly Published December 27, 2023
Last Updated January 22, 2024
Researcher Rafie Muhammad - Awesome Motive, Inc.

Description

The MC4WP plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the 'listen' function in versions up to, and including, 4.9.9. This makes it possible for unauthenticated attackers to preview unpublished forms.

References

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Vulnerability Details for MC4WP: Mailchimp for WordPress

Software Type Plugin
Software Slug mailchimp-for-wp (view on wordpress.org)
Patched? Yes
Remediation Update to version 4.9.10, or a newer patched version
Affected Version
  • <= 4.9.9
Patched Version
  • 4.9.10

Recent vulnerabilities in MC4WP: Mailchimp for WordPress

# Title CVE ID CVSS Researchers Date
1 MC4WP: Mailchimp for WordPress <= 4.11.1 - Missing Authorization to Unauthenticated Arbitrary Subscription Deletion CVE-2026-1781 6.5 Sarawut Poolkhet (MisterHelloz) March 10, 2026
2 MailChimp for Wordpress <= 4.9.16 - Authenticated (Administrator+) Stored Cross-Site Scripting CVE-2024-8680 4.4 Jorge Diaz (ddiax) September 20, 2024
3 MC4WP: Mailchimp for WordPress 4.9.9 - 4.9.16 - Reflected Cross-Site Scripting CVE-2024-8850 6.1 kauenavarro September 18, 2024
4 MC4WP: Mailchimp for WordPress <= 4.8.6 - Authenticated (Admin+) Stored Cross-Site Scripting CVE-2021-36833 5.5 Asif Nawaz Minhas March 2, 2022
5 MC4WP: Mailchimp for WordPress < 4.8.7 - Cross-Site Scripting 5.5 March 2, 2022
6 MC4WP: Mailchimp for WordPress <= 4.8.4 - Cross-Site Request Forgery 8.8 WPScanTeam June 1, 2021
7 MC4WP: Mailchimp for WordPress <= 4.8.4 - Open Redirect 6.1 WPScanTeam June 1, 2021
8 MC4WP: Mailchimp for WordPress <= 4.1.6 - Reflected Cross-Site Scripting 6.1 RIPS Technologies November 9, 2019
9 Mailchimp For WP <= 4.1.7 - Cross-Site Scripting CVE-2017-18577 6.1 September 8, 2017
10 MailChimp for WordPress <= 4.0.10 - Reflected Cross-Site Scripting CVE-2016-10871 6.1 December 13, 2016

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