CVE-2025-66128 MEDIUM

CVE-2025-66128: WordPress Sendinblue for WooCommerce plugin <= 4.0.49 - Broken Access Control vulnerability

Vendor Brevo
Product Sendinblue for WooCommerce
Weakness CWE-862 · Missing authorization
Published December 16, 2025
Last update April 28, 2026
View on NVD All CVEs

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

What the vulnerability does

01Description

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.

Explanation of Vulnerability in Simple Terms

02Summary

The Sendinblue for WooCommerce plugin through version 4.0.49 lacks proper authorization checks, allowing unauthenticated attackers to modify data via the network. The vulnerability does not expose sensitive information or disrupt service availability, but attackers can alter content without authentication or user interaction required.

What an attacker can do

03Attacker Capabilities

Modify plugin data or settings without logging in.

Potential impact on your site

04Site Impact

Attackers can alter WooCommerce or Sendinblue plugin configuration without your knowledge or permission.

Conditions required to exploit

05Prerequisites

Network access only; no authentication or user interaction needed.

Key dates

06Disclosure timeline

December 16, 2025 CVE published
April 28, 2026 Record updated