CVE-2026-15297
Received Received - Intake

Reflected XSS in Brevo WordPress Plugin

Publication date: 2026-07-10

Last updated on: 2026-07-10

Assigner: Wordfence

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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-07-10
Last Modified
2026-07-10
Generated
2026-07-10
AI Q&A
2026-07-10
EPSS Evaluated
N/A
NVD
CVE-2026-15297
EUVD
EUVD-2026-42804

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
brevo newsletter_plugin to 3.1.77 (inc)

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

The vulnerability exists in the Newsletter, SMTP, Email marketing and Subscribe forms by Brevo (formerly Sendinblue) plugin for WordPress. It is a Reflected Cross-Site Scripting (XSS) issue that occurs via the page parameter in all versions up to and including 3.1.77.

This happens because the plugin does not properly sanitize input or escape output, allowing attackers to inject arbitrary web scripts.

An unauthenticated attacker can exploit this by tricking a user into clicking a specially crafted link, causing the injected script to execute in the user's browser.

Impact Analysis

This vulnerability can allow attackers to execute arbitrary scripts in the context of the affected website when a user clicks a malicious link.

Potential impacts include theft of user session data, defacement of the website, redirection to malicious sites, or other malicious actions performed on behalf of the user.

Because the attack requires user interaction (clicking a link), it is classified with a CVSS score indicating low complexity but significant impact on confidentiality and integrity.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-15297. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart