CVE-2024-35668 Cross-site scripting in Newsletter, SMTP, Email marketing and Subscribe forms by Sendinblue

High 7.1 Published 4 Jun 2024 Updated 28 Apr 2026

Reflected XSS in Brevo WordPress plugin allows attackers to inject malicious scripts into web pages viewed by other users.

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-2024-35668?

CVE-2024-35668 is a high-severity cross-site scripting vulnerability in Brevo Newsletter, SMTP, Email marketing and Subscribe forms by Sendinblue, published on 4 Jun 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

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Brevo Newsletter, SMTP, Email marketing and Subscribe forms by Sendinblue allows Reflected XSS.This issue affects Newsletter, SMTP, Email marketing and Subscribe forms by Sendinblue: from n/a through 3.1.77.

Weakness: CWE-79

Which versions are affected by CVE-2024-35668?

It affects 1 product.

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

How do I fix CVE-2024-35668?

No fix has been published for CVE-2024-35668 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2024-35668 being exploited?

There is no known exploitation of CVE-2024-35668 in the wild and no public exploit code.

Sources

Also known as GHSA-q59j-865p-4rmj.