SEPTEMBER 18, 2026
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Case File

CVE-2026-4561

MEDIUM · CVSS 6.4 EPSS 0.32%

Source: NVD + CISA KEV + EPSS · Published 2026-08-22 · Last synced 2026-09-18

CyberRota Analysis

AI-Generated

The MC4WP: Mailchimp for WordPress plugin is vulnerable to Stored Cross-Site Scripting due to inadequate input sanitization and output escaping in the form response message post meta fields. This flaw allows authenticated attackers with Author-level access or higher to inject malicious scripts that execute when users access affected pages. WordPress site administrators using this plugin should prioritize patching to mitigate potential exploitation risks.

CVE
CVE-2026-4561
Severity
MEDIUM
CVSS
6.4
EPSS
0.32%
WordPress

Original NVD Description

The MC4WP: Mailchimp for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the form response message post meta fields (e.g., 'text_subscribed', 'text_error') in all versions up to, and including, 4.12.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.