PT-2026-79552 · WordPress · Mc4Wp: Mailchimp For Wordpress
CVE-2026-4561
·
Published
2026-08-22
·
Updated
2026-08-24
CVSS v3.1
6.4
Medium
| Vector | AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
Name of the Vulnerable Software and Affected Versions
MC4WP: Mailchimp for WordPress versions prior to 4.12.1
Description
Insufficient input sanitization and output escaping allow authenticated attackers with Author-level access and above to perform Stored Cross-Site Scripting. This is achieved by injecting arbitrary web scripts into form response message post meta fields, such as
text subscribed and text error. These scripts execute whenever a user accesses the affected page.Recommendations
Update MC4WP: Mailchimp for WordPress to version 4.12.1 or later.
Fix
XSS
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Weakness Enumeration
Related Identifiers
Affected Products
Mc4Wp: Mailchimp For Wordpress