A prototype pollution vulnerability was found in lodash <4.17.11 where the functions merge, mergeWith, and defaultsDeep can be tricked into adding or modifying properties of Object.prototype.
Exploitability
AV:NAC:HPR:NUI:NScope
S:UImpact
C:LI:LA:L5.6/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:LResource Management