This issue was addressed with improved checks. This issue is fixed in macOS Mojave 10.14.5. A malicious application may bypass Gatekeeper checks.
https://support.apple.com/HT210119
Source: Mitre, NVD
Published: 2019-12-18
Updated: 2020-08-24
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 5.5
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N