PT-2026-57072 · Brevo · Newsletters

Stealthcopter · CVE-2026-15297 · Published 2026-07-10 · Updated 2026-07-10

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions The Newsletter, SMTP, Email marketing and Subscribe forms by Brevo (formely Sendinblue) plugin for WordPress versions prior to 3.1.78

Description Insufficient input sanitization and output escaping allow unauthenticated attackers to perform Reflected Cross-Site Scripting (XSS), a technique where malicious scripts are injected into a web page and executed in the victim's browser. This occurs via the page parameter, enabling the execution of arbitrary web scripts if a user is tricked into clicking a malicious link.

Recommendations Update the plugin to version 3.1.78 or later. As a temporary mitigation, restrict or sanitize the use of the page parameter.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-15297

Affected Products

Newsletters

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2026-15297 · Security Note
• https://t.me/cveNotify/194921 · Telegram Post
• https://plugins.trac.wordpress.org/browser/mailin/trunk/inc/table-forms.php#L102 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/bf4cb79e-e62b-4991-8ee5-493dafe38b80?source=cve · Note
• https://t.me/cveNotify/194575 · Telegram Post
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3055756%40mailin%2Ftrunk&old=3032712%40mailin%2Ftrunk&sfp_email=&sfph_mail= · Note