CVE-2025-48308: Nonletter Newsletter Subscription Optin Module

High severity, CVSS 7.1. EPSS: 0.1% chance of exploitation in the next 30 days.

Cross-Site Request Forgery (CSRF) vulnerability in nonletter Newsletter subscription optin module newsletter-subscription-widget-for-sendblaster allows Stored XSS.This issue affects Newsletter subscription optin module: from n/a through <= 1.2.9.

Affected products

• Nonletter Newsletter Subscription Optin Module: up to and including 1.2.9

Published 2025-08-28. Last modified 2026-06-17.