CVE-2026-15297: 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
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.
Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-15297
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-152970.26% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 17% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-15297 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for Newsletter
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- mediumCVE-2026-12918: The Mail Mint – Email Marketing, Newsletter, Email Automation & WooCommerce Emails plugin for …nvd · 2026-07-10
- mediumCVE-2026-14342: The Mail Mint – Email Marketing, Newsletter, Email Automation & WooCommerce Emails plugin for …nvd · 2026-07-09
- mediumCVE-2026-12170: The AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress…nvd · 2026-07-09
- mediumCVE-2026-14029: The Groundhogg — CRM, Newsletters, and Marketing Automation plugin for WordPress is vulnerable…nvd · 2026-07-02
- mediumCVE-2026-11592: The Email Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin …nvd · 2026-07-02
- mediumCVE-2026-13333: The Groundhogg — CRM, Newsletters, and Marketing Automation plugin for WordPress is vulnerable…nvd · 2026-06-27
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