Vulnerability · Published Jul 10, 2026 · Assigned by Wordfence

CVE-2026-15297Newsletter, SMTP, Email marketing and Subscribe forms by Brevo (formely Sendinblue) <= 3.1.77 - Reflected Cross-Site Scripting

Medium 6.1

In plain English

A medium-severity cross-site scripting in Brevo – Email, SMS, Web Push, Chat, and more. from neeraj_slit. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).

Severity (CVSS 3.1)6.1Medium

Exploit odds (30 days)0.4%top 70.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

The Newsletter, SMTP, Email marketing and Subscribe forms by Brevo (formely Sendinblue) plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the page parameter in all versions up to, and including, 3.1.77 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Affected products (as reported)

Vendor	Product	Versions
neeraj_slit	Brevo – Email, SMS, Web Push, Chat, and more.	0 – through 3.1.77

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

In plain English

Official description

Affected products (as reported)

References