SEPTEMBER 20, 2026
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Case File

CVE-2026-15052

HIGH · CVSS 7.2 EPSS 0.30%

Source: NVD + CISA KEV + EPSS · Published 2026-08-01 · Last synced 2026-08-31

CyberRota Analysis

AI-Generated

The MailChimp Subscribe Form, Optin Builder, PopUp Builder, and Form Builder plugins for WordPress are vulnerable to Stored Cross-Site Scripting due to inadequate input sanitization and output escaping in all versions up to 4.3.3. This vulnerability allows unauthenticated attackers to inject malicious scripts that execute when users access affected pages, potentially compromising user data and site integrity. WordPress site administrators using these plugins should prioritize updating to mitigate the risk of exploitation.

CVE
CVE-2026-15052
Severity
HIGH
CVSS
7.2
EPSS
0.30%
WordPress

Original NVD Description

The MailChimp Subscribe Form, Optin Builder, PopUp Builder, Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Form Field Values in all versions up to, and including, 4.3.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.