EUVD-2026-23866

| CVE-2026-3219 MEDIUM
Unrestricted Upload of File with Dangerous Type (CWE-434)
2026-04-20 PSF GHSA-58qw-9mgm-455v
File Upload
4.6
CVSS 4.0
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CVSS VectorNVD

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/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
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
A
Scope
X

Lifecycle Timeline

1
Analysis Generated
Apr 20, 2026 - 17:53 vuln.today

DescriptionNVD

pip handles concatenated tar and ZIP files as ZIP files regardless of filename or whether a file is both a tar and ZIP file. This behavior could result in confusing installation behavior, such as installing "incorrect" files according to the filename of the archive. New behavior only proceeds with installation if the file identifies uniquely as a ZIP or tar archive, not as both.

AnalysisAI

pip before version 26.1 incorrectly treats concatenated tar and ZIP archives as ZIP files regardless of filename, potentially installing unintended package contents when ambiguous archive formats are processed. Local attackers with user interaction can exploit this during package installation to cause integrity confusion, where an archive's actual contents diverge from its declared format. …

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EUVD-2026-23866 vulnerability details – vuln.today
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