Jenkins Mailer Plugin 1.32 and earlier does not perform hostname validation when connecting to the configured SMTP server.
https://www.jenkins.io/security/advisory/2020-09-16/#SECURITY-1813
http://www.openwall.com/lists/oss-security/2020/09/16/3
Source: Mitre, NVD
Published: 2020-09-16
Updated: 2023-10-25
Base Score: 5.8
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N
Severity: Medium
Base Score: 4.8
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N