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CVE-2026-3087

shutil.unpack_archive() doesn't check for Windows absolute paths in ZIPs

Published: Apr 27, 2026Updated: Aug 5, 2026 Sources: CVE List NVDCWE-22
7.5HIGH
NVD MITRE
EPSS Score
0.5%
Top 58.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

If `shutil.unpack_archive()` is given a ZIP archive with an absolute Windows path containing a drive (`C:\\...`) then the archive will be extracted outside the target directory which is different than other operating systems. Only Windows is affected by this vulnerability.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-22

Affected Products

python
oss-project·US
pythonLibraryLibrary
OSS Libraries
Python Software Foundation
oss-project·USaka psf
CPython
OSS Libraries

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Collection
Discovery
View detailed technique mapping

References

https://github.com/python/cpython/commit/65b255416ae217bf0e22085be3c1976cea18bd8c
github.com
https://github.com/python/cpython/commit/8e13025747e1ca72e86d1f35637123f9c306f0cb
github.com
https://github.com/python/cpython/commit/8ee6aff14054b37b53e47194a2fa313e98163c94
github.com
and 9 more references View all →

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