An issue was discovered in Artifex Ghostscript before 10.03.1. There is path traversal (via a crafted PostScript document) to arbitrary files if the current directory is in the permitted paths. For example, there can be a transformation of ../../foo to ./../../foo and this will grant access if ./ is permitted.
Exploitability
AV:AAC:LPR:NUI:NScope
S:UImpact
C:LI:LA:L6.3/CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L