Nagios NRPE 3.2.1 has Insufficient Filtering because, for example, nasty_metachars interprets \n as the character \ and the character n (not as the \n newline sequence). This can cause command injection.
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2DNGKXVDB43E3KQRA6W5QZT3Z46XZLQM/
Source: Mitre, NVD
Published: 2020-03-16
Base Score: 3.7
Vector: CVSS2#AV:L/AC:H/Au:N/C:P/I:P/A:P
Severity: Low
Base Score: 7.3
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Severity: High