CVE-2020-2253: Jenkins Email Extension

Medium severity, CVSS 4.8. EPSS: 0.7% chance of exploitation in the next 30 days.

Jenkins Email Extension Plugin 2.75 and earlier does not perform hostname validation when connecting to the configured SMTP server.

Affected products

• Jenkins Email Extension: up to and including 2.75

Published 2020-09-16. Last modified 2026-06-17.