CVE-2026-103482

The Simple Newsletter Plugin – Noptin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'noptinfields e.g. firstname' parameter in all versions up to, and including, 4.3.10 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticat...

CVE-2026-103482

The Simple Newsletter Plugin (Noptin) for WordPress is vulnerable to Unauthenticated Stored Cross-Site Scripting (XSS) in versions up to and including 4.3.10 . The root cause is insufficient input sanitization and output escaping within the noptin_fields[] parameter. An unauthenticated attacker c...

CVE-2026-103482 Simple Newsletter Plugin <= 4.3.10 - Unauthenticated Stored Cross-Site Scripting via Subscriber Custom Field via Manage Preferences Form + Campaign Preview noptin_key Pivot

The Simple Newsletter Plugin – Noptin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'noptinfields e.g. firstname' parameter in all versions up to, and including, 4.3.10 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticat...

EUVD-2026-96112

The Simple Newsletter Plugin – Noptin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'noptinfields e.g. firstname' parameter in all versions up to, and including, 4.3.10 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticat...

CVE-2026-103482 Simple Newsletter Plugin <= 4.3.10 - Unauthenticated Stored Cross-Site Scripting via Subscriber Custom Field via Manage Preferences Form + Campaign Preview noptin_key Pivot

The Simple Newsletter Plugin – Noptin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'noptinfields e.g. firstname' parameter in all versions up to, and including, 4.3.10 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticat...

CVE-2026-103482: Improper Neutralization of Input During Web Page Generation

The Simple Newsletter Plugin – Noptin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'noptinfields e.g. firstname' parameter in all versions up to, and including, 4.3.10 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticat...

WordPress Noptin Cross-Site Script Vulnerability

WordPress Noptin 4.3.10 and earlier versions have a cross-site scripting vulnerability. This vulnerability stems from insufficient input cleaning and output escaping. Unauthenticated attackers can inject arbitrary web scripts using the 'noptinfields' parameter such as firstname, resulting in...