CVE-2026-106057
patool before 4.0.6 OS Command Injection on Windows via shell_quote_nt
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-78 |
| Vendor | wummel |
| Product | patool |
| Published | Oct 7, 2026 |
| Last Updated | Oct 7, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
wummel / patool
0 < 4.0.6
References
github.com: https://github.com/wummel/patool/commit/592f35761f428afbcde2888ecd3cc4af43881aeb github.com: https://github.com/wummel/patool github.com: https://github.com/wummel/patool/blob/4.0.5/patoolib/util.py#L110-L116 vulncheck.com: https://www.vulncheck.com/advisories/patool-before-4.0.6-os-command-injection-on-windows-via-shell-quote-nt
Credits
Muhammad Sobirov