CVE-2025-49871: Noptin Newsletter Team Noptin

Medium severity, CVSS 5.9. EPSS: 0.2% chance of exploitation in the next 30 days.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Noptin Newsletter Team Noptin newsletter-optin-box allows Stored XSS.This issue affects Noptin: from n/a through <= 3.8.7.

Affected products

• Noptin Newsletter Team Noptin: up to and including 3.8.7

Published 2025-06-17. Last modified 2026-06-17.