CVE-2025-66128: Brevo Sendinblue For Woocommerce

Medium severity, CVSS 5.3. EPSS: 0.3% chance of exploitation in the next 30 days.

Missing Authorization vulnerability in Brevo Sendinblue for WooCommerce woocommerce-sendinblue-newsletter-subscription allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Sendinblue for WooCommerce: from n/a through <= 4.0.49.

Affected products

• Brevo Sendinblue For Woocommerce: up to and including 4.0.49

Published 2025-12-16. Last modified 2026-06-17.