CVE-2025-66525: Elastic Email Sender

Medium severity, CVSS 4.3. EPSS: 0.3% chance of exploitation in the next 30 days.

Missing Authorization vulnerability in Elastic Email Elastic Email Sender elastic-email-sender allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Elastic Email Sender: from n/a through <= 1.2.20.

Affected products

• Elastic Email Elastic Email Sender: up to and including 1.2.20

Published 2025-12-09. Last modified 2026-10-07.