CVE Catalog

CVE-2026-15052

HighCVSS 7.2
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.24%

15th percentile - higher than 15% of all known CVEs

Summary

The MailChimp Subscribe Form, Optin Builder, PopUp Builder, Form Builder plugin for WordPress is vulnerable to stored cross-site scripting via form field values. Unauthenticated attackers can inject arbitrary scripts that execute when a user accesses the page.

Risk Assessment

An attacker can steal user session data or redirect users to malicious sites, compromising site security.

Recommendation

Update the plugin to a version that improves input sanitization and output escaping.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS