CVE-2024-8477 Cross-site request forgery in Brevo – Email, SMS, Web Push, Chat, and more.

Medium 4.3 Published 10 Oct 2024 Updated 8 Apr 2026

Unauthenticated attackers can force site administrators to log out of Brevo connections via forged requests, requiring user interaction.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2024-8477?

CVE-2024-8477 is a medium-severity vulnerability in neeraj_slit Brevo – Email, SMS, Web Push, Chat, and more., published on 10 Oct 2024. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

The Newsletter, SMTP, Email marketing and Subscribe forms by Brevo (formely Sendinblue) plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 3.1.87. This is due to missing or incorrect nonce validation on the Init() function. This makes it possible for unauthenticated attackers to log out of a Brevo connection via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Weakness: CWE-352

Which versions are affected by CVE-2024-8477?

It affects 1 product.

Products include Brevo Newsletter\, Smtp\, Email Marketing and Subscribe.

How do I fix CVE-2024-8477?

No fix has been published for CVE-2024-8477 yet. Limit exposure of the affected software until one is available.

Is CVE-2024-8477 being exploited?

There is no known exploitation of CVE-2024-8477 in the wild and no public exploit code.

Sources

Also known as GHSA-qc4q-h4wc-9xq4.