CVE-2026-106057

patool before 4.0.6 OS Command Injection on Windows via shell_quote_nt

8.5 High

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.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: Passive

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.75%Unchanged since Oct 8, 2026

What each source reports

CVE List Score used 8.5

patool before 4.0.6 OS Command Injection on Windows via shell_quote_nt

Record: CVE-2026-106057
CVSS 4.0: 8.5 HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-78
Updated: 2026-11-02

EUVDEUVD-2026-94305 8.5

Record: EUVD-2026-94305
CVSS 4.0: 8.5 HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-73h5-w67h-9rfh 8.5

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

Record: GHSA-73h5-w67h-9rfh
CVSS 4.0: 8.5 HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-78
Updated: 2026-11-02

NVD 8.5

Record: CVE-2026-106057
CVSS 4.0: 8.5 HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-78
Updated: 2026-11-02

OSV 8.5

patool before 4.0.6 OS Command Injection on Windows via shell_quote_nt

Record: CVE-2026-106057
CVSS 4.0: 8.5 HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Weakness: CWE-78
Updated: 2026-11-02

OSVUBUNTU-CVE-2026-106057 8.5

Record: UBUNTU-CVE-2026-106057
CVSS 4.0: 8.5 HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

Affected products

wummel patool

Affected packages

Affected packages
Package	Affected	Fixed
`patool` Ubuntu:16.04:LTS	All versions, plus listed versions 1.7-11.8-11.10-1	None known
`patool` Ubuntu:18.04:LTS	All versions, plus listed versions 1.12-3	None known
`patool` Ubuntu:20.04:LTS	All versions, plus listed versions 1.12-31.12-3build11.12-41.12-5	None known
`patool` Ubuntu:22.04:LTS	All versions, plus listed versions 1.12-5	None known
`patool` Ubuntu:24.04:LTS	All versions, plus listed versions 1.12-52.0.0-2	None known
`patool` Ubuntu:26.10	All versions, plus listed versions 4.0.4-14.0.5-0.1	None known
`patool` Ubuntu:26.04:LTS	All versions, plus listed versions 4.0.0-14.0.3-14.0.4-1	None known

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-106057 is a high vulnerability (CVSS 8.5) in Wummel Patool, published October 7, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.75%, the 55th percentile. No source names a fixed version.