Brevo Sendinblue for WooCommerce Plugin up to 4.0.49 on WordPress Subscription authorization

Summaryinfo

A vulnerability, which was classified as critical, was found in Brevo Sendinblue for WooCommerce Plugin up to 4.0.49 on WordPress. The impacted element is an unknown function of the component Subscription Handler. The manipulation results in authorization. This vulnerability was named CVE-2025-66128. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability classified as critical has been found in Brevo Sendinblue for WooCommerce Plugin up to 4.0.49 on WordPress. Affected is some unknown functionality of the component Subscription Handler. The manipulation with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. The impact remains unknown. CVE summarizes:

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.

The weakness was presented by Numex. The advisory is available at vdp.patchstack.com. This vulnerability is traded as CVE-2025-66128 since 11/21/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 12/16/2025).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• E-Commerce Management Software

Vendor

• Brevo

Name

• Sendinblue for WooCommerce Plugin

Version

• 4.0.0
• 4.0.1
• 4.0.2
• 4.0.3
• 4.0.4
• 4.0.5
• 4.0.6
• 4.0.7
• 4.0.8
• 4.0.9
• 4.0.10
• 4.0.11
• 4.0.12
• 4.0.13
• 4.0.14
• 4.0.15
• 4.0.16
• 4.0.17
• 4.0.18
• 4.0.19
• 4.0.20
• 4.0.21
• 4.0.22
• 4.0.23
• 4.0.24
• 4.0.25
• 4.0.26
• 4.0.27
• 4.0.28
• 4.0.29
• 4.0.30
• 4.0.31
• 4.0.32
• 4.0.33
• 4.0.34
• 4.0.35
• 4.0.36
• 4.0.37
• 4.0.38
• 4.0.39
• 4.0.40
• 4.0.41
• 4.0.42
• 4.0.43
• 4.0.44
• 4.0.45
• 4.0.46
• 4.0.47
• 4.0.48
• 4.0.49

CPE 2.3info

• 🔒
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CPE 2.2info

• 🔒
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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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