Brevo SMTP – YaySMTP

Brevo SMTP – YaySMTP has 2 disclosed vulnerabilities in the WordSec catalog, all reported in 2025; all 2 are fixed as of September 2026. Their average CVSS score is 6.1, and the most serious one scores 7.2 out of 10. Severity breakdown: 0 critical and 1 high. 2025 was the busiest year with 2 disclosures.

The most common weakness is Cross-Site Scripting, behind 1 of the records (50%). Other recurring categories include SQL Injection.

Every one of the 2 issues recorded for Brevo SMTP – YaySMTP has a vendor fix available, so running the current release closes all known holes.

2 independent researchers contributed these findings, one record each. Brevo SMTP – YaySMTP is installed on roughly 300 WordPress sites, so each unpatched flaw has a wide blast radius. The current release is tested up to WordPress 7.0.4.

Strategic Overview

Avg CVSSMedium

6.1/ 10

Patch Coverage100%

Open

Fixed

Get automatic notifications for all Brevo SMTP – YaySMTP vulnerabilities before they are exploited.

Highest severity on recordCVSS 7.2CVE-2025-0953

SMTP for Sendinblue – YaySMTP <= 1.2 - Unauthenticated Stored Cross-Site Scripting via Email Logs

Read the full analysis

Vulnerability Records

2 records


2025-07-16 00:00	YaySMTP <= 1.3 - Authenticated (Administrator+) SQL Injection Brevo SMTP <= 1.3	`CVE-2025-48161`	4.9 Medium	Lê Quốc Bảo	Yes
2025-02-22 00:00	SMTP for Sendinblue – YaySMTP <= 1.2 - Unauthenticated Stored Cross-Site Scripting via Email Logs Brevo SMTP <= 1.2	`CVE-2025-0953`	7.2 High	Cristian Bejan (cbejan)	Yes

Showing 1–2 of 2 reports

Latestv1.3.1

Brevo SMTP – YaySMTP

Author

YayCommerce

0.0(0)

0/100

Last Updated

2026-05-18 (4mo ago)

Active Installs

300+

Downloads

7,714

Requires WP

4.0+

Requires PHP

5.3+

Tested up to

WP 7.0.4

Created

2021-04-09 (6y ago)

Send emails from WordPress through Brevo using SMTP by YayCommerce SMTP for Brevo, formerly Sendinblue, helps you send sleek email notifications successfully. It has an advanced email log with various options to help you show/hide columns, view/filter data, and set up auto-delete old data as well. With a good SMTP plugin dedicated to Brevo/Sendinblue, you can make sure to improve the audience engagement and deliverability of your transactional email messages. It works great for plain text, HTML mail, promotional and marketing email. Brevo SMTP Setup Guide | Upgrade to Pro ⚡️ FEATURES SMTP for Sendinblue – YaySMTP comes with a modern user interface that lets you start sending and receiving emails through WordPress quickly. Simple setup: clear interface and simplified user experience Email log: set log duration, show/hide columns Email actions: display, search, view, delete emails easily Super lightweight: no-nonsense coding Single window: set up API key and make changes without reloading the page Send test email: one click to send email for testing 🎏 Supported Themes and Plugins Complete compatibility with all themes, page builders and major plugins. Perfect with YayMail – WooCommerce Email Customizer plugin. 📝 Documentation and Support If you’re having issues, do let us know and we’ll be happy to help. ♥️ Like this YaySMTP Plugin? Rate us 5⭐ stars on WordPress.org. Follow us for latest updates!

View on WordPress.org