A vulnerability has been found in wummel patool 4.1.0. This vulnerability affects the function extractgzip of the file patoolib/fileutil.py of the component Gzip Extraction Handler. The manipulation leads to symlink following. Local access is required to approach this attack. The researcher claims to have submitted a GHSA on the repository of the project.

patool before 4.0.6 contains an OS command injection vulnerability on Windows because shellquotent fails to escape cmd.exe metacharacters or embedded double quotes in archive filenames. Attackers can supply crafted filenames like report&calc.gz for single-file formats run with shell=True to execute commands with patool process privileges.