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CVE-2024-9210

MEDIUM 6.1 CVSS 3.1
Published
October 2, 2024
Last modified
June 17, 2026
NVD status
Analyzed
Reported by
security@wordfence.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Description

The MC4WP: Mailchimp Top Bar plugin for WordPress is vulnerable to Reflected Cross-Site Scripting due to the use of add_query_arg without appropriate escaping on the URL in all versions up to, and including, 1.6.0. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Affected WordPress components

  • MC4WP: Mailchimp Top Bar – Email Subscribe Notification Bar Plugin · mailchimp-top-bar
    Confirmed match Active
    Up to and including 1.6.0
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • dvankooten MC4WP: Mailchimp Top Bar — Up to and including 1.6.0
  • dvankootem mailchimp_top_bar — Up to and including 1.6.0
  • ibericode mailchimp_top_bar — Before 1.6.1

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/mailchimp-top-bar/tags/1.6.0/views/settings-page.php#L40 Product
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/mailchimp-top-bar/tags/1.6.1/views/settings-page.php#L40 Product
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/b45ba98f-4cd1-406a-8661-e19d5b4c3ba8?source=cve Third Party Advisory
  • nvd.nist.gov Official NVD record