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CVE-2026-3087 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
http://www.openwall.com/lists/oss-security/2026/04/28/9	CVE	Mailing ListThird Party Advisory
https://github.com/python/cpython/commit/1071290169f85c09cf767c1099564a9426cdc7e8	[email protected]
https://github.com/python/cpython/commit/65b255416ae217bf0e22085be3c1976cea18bd8c	[email protected]	Patch
https://github.com/python/cpython/commit/7ef7dd0a74f47facd1fadcbc77f8fb03beb5eb4d	[email protected]
https://github.com/python/cpython/commit/8e13025747e1ca72e86d1f35637123f9c306f0cb	[email protected]	Patch
https://github.com/python/cpython/commit/8ee6aff14054b37b53e47194a2fa313e98163c94	[email protected]	Patch
https://github.com/python/cpython/commit/a6650a2cdf0c49fb8ce0c982903aa2aa274beefe	[email protected]
https://github.com/python/cpython/commit/ab5ef98af693bded74a738570e81ea70abef2840	[email protected]	Patch
https://github.com/python/cpython/commit/b01e594fbe754a960212f908d047294e880b52fd	[email protected]	Patch
https://github.com/python/cpython/commit/ba0aca3bffce431fe2fbd53ca4cd6a717a2e2c19	[email protected]	Patch
https://github.com/python/cpython/commit/fc829e88753858c8ac669594bf0093f44948c0f4	[email protected]	Patch
https://github.com/python/cpython/issues/146581	[email protected]	ExploitIssue TrackingPatchVendor Advisory
https://github.com/python/cpython/pull/146591	[email protected]	Issue TrackingPatch
https://mail.python.org/archives/list/[email protected]/thread/X6FXE5C6KDKOVNX3EC3DWD5RUPFWOZA4/	[email protected]	Mailing ListVendor Advisory

see all 14 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-22	Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')	[email protected]

Affected Products

Product	Versions
python python	<= 3.14.4 3.15.0 alpha1 3.15.0 alpha2 3.15.0 alpha3 3.15.0 alpha4
CPE cpe:2.3:a:python:python:::::::: cpe:2.3:a:python:python:3.15.0:alpha1:::::: cpe:2.3:a:python:python:3.15.0:alpha2:::::: cpe:2.3:a:python:python:3.15.0:alpha3:::::: cpe:2.3:a:python:python:3.15.0:alpha4:::::: cpe:2.3:a:python:python:3.15.0:alpha5:::::: cpe:2.3:a:python:python:3.15.0:alpha6:::::: cpe:2.3:a:python:python:3.15.0:alpha7:::::: cpe:2.3:a:python:python:3.15.0:alpha8:::::: Remediation No remediation found in references.
microsoft windows	All versions
CPE cpe:2.3:o:microsoft:windows:-:::::::* Remediation No remediation found in references.

Change History

12 change records found show changes

Date	Action	Recorded By
Aug 13, 2026	CVE Modified	[email protected]
Aug 10, 2026	CVE Modified	[email protected]
Aug 10, 2026	CVE Modified	[email protected]
Aug 5, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Jun 5, 2026	Modified Analysis	[email protected]
Jun 4, 2026	CVE Modified	[email protected]
May 13, 2026	Initial Analysis	[email protected]
Apr 29, 2026	CVE Modified	[email protected]
Apr 28, 2026	CVE Modified	CVE
Apr 27, 2026	New CVE Received	[email protected]