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Status published
Medium
CVE-2021-36833
WordPress MC4WP plugin <= 4.8.6 - Authenticated Stored Cross-Site Scripting (XSS) vulnerability
Vulnerability Description
Authenticated (admin or higher user role) Stored Cross-Site Scripting (XSS) vulnerability in ibericode's MC4WP plugin <= 4.8.6 at WordPress.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Vulnerability discovered by Asif Nawaz Minhas (Patchstack Alliance)
References
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Affected Vendor
ibericode
View all reports →Affected Software
MC4WP: Mailchimp for WordPress
Vulnerable Versions:
<= 4.8.6
Timeline
Official Publish:
May 20th, 2022
Last Modified:
April 28th, 2026
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N