High severity7.8NVD Advisory· Published Oct 7, 2026

CVE-2026-106057

Description

patool before 4.0.6 contains an OS command injection vulnerability on Windows because shell_quote_nt 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.

Affected products

Patool/Patoolllm-fuzzy
Range: <4.0.6

Patches

Vulnerability mechanics

References

github.com/wummel/patool/blob/4.0.5/patoolib/util.pynvd
github.com/wummel/patool/commit/592f35761f428afbcde2888ecd3cc4af43881aebnvd
www.vulncheck.com/advisories/patool-before-4.0.6-os-command-injection-on-windows-via-shell-quote-ntnvd

News mentions

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cvss	0.507
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000