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CVE Database / CVE-2026-66596

CVE · High

CVE-2026-66596 — Newsletter – Send awesome emails from WordPress [newsletter] < 9.3.4

CVE Vulnerability Type Severity Affected Fixed in Published Status
CVE-2026-66596 Newsletter – Send awesome emails from WordPress [newsletter] < 9.3.4 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') High 7.1 < 9.3.4 9.3.4 2026-08-19 —

CVE-2026-66596

An unauthenticated attacker can inject malicious JavaScript code into the Newsletter application, potentially allowing them to steal user data or take control of user sessions, without requiring any form of authentication or authorization. This vulnerability exists in versions of the application up to and including 9.3.3.

Based on public CVE data (MITRE/NVD).

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