CVE-2026-3087

MEDIUM EPSS 40.8%
Published Apr 27, 20262mo ago · Modified Jun 17, 20261w ago
6.0 CVSS 4.0
Medium
Find Similar
Published Apr 27, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
6.0
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/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 Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
40.8% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-22 Path Traversal Resource Mgmt

Affected Products 10

VendorProductVersionRange
pythonpython* ≤3.14.4
pythonpython3.15.0any
pythonpython3.15.0any
pythonpython3.15.0any
pythonpython3.15.0any
pythonpython3.15.0any
pythonpython3.15.0any
pythonpython3.15.0any
pythonpython3.15.0any
microsoftwindows*any

References 11

  • openwall.com http://www.openwall.com/lists/oss-security/2026/04/28/9
    Mailing ListThird Party Advisory
  • github.com https://github.com/python/cpython/commit/65b255416ae217bf0e22085be3c1976cea18bd8c
    Patch
  • github.com https://github.com/python/cpython/commit/8e13025747e1ca72e86d1f35637123f9c306f0cb
    Patch
  • github.com https://github.com/python/cpython/commit/8ee6aff14054b37b53e47194a2fa313e98163c94
    Patch
  • github.com https://github.com/python/cpython/commit/ab5ef98af693bded74a738570e81ea70abef2840
    Patch
  • github.com https://github.com/python/cpython/commit/b01e594fbe754a960212f908d047294e880b52fd
    Patch
  • github.com https://github.com/python/cpython/commit/ba0aca3bffce431fe2fbd53ca4cd6a717a2e2c19
    Patch
  • github.com https://github.com/python/cpython/commit/fc829e88753858c8ac669594bf0093f44948c0f4
    Patch
  • github.com https://github.com/python/cpython/issues/146581
    ExploitIssue TrackingPatchVendor Advisory
  • github.com https://github.com/python/cpython/pull/146591
    Issue TrackingPatch
  • mail.python.org https://mail.python.org/archives/list/security-announce@python.org/thread/X6FXE5C6KDKOVNX3EC3DWD5RUPFWOZA4/
    Mailing ListVendor Advisory

Remediation

  • github.com https://github.com/python/cpython/commit/65b255416ae217bf0e22085be3c1976cea18bd8c
    Patch
  • github.com https://github.com/python/cpython/commit/8e13025747e1ca72e86d1f35637123f9c306f0cb
    Patch
  • github.com https://github.com/python/cpython/commit/8ee6aff14054b37b53e47194a2fa313e98163c94
    Patch
  • github.com https://github.com/python/cpython/commit/ab5ef98af693bded74a738570e81ea70abef2840
    Patch
  • github.com https://github.com/python/cpython/commit/b01e594fbe754a960212f908d047294e880b52fd
    Patch
  • github.com https://github.com/python/cpython/commit/ba0aca3bffce431fe2fbd53ca4cd6a717a2e2c19
    Patch
  • github.com https://github.com/python/cpython/commit/fc829e88753858c8ac669594bf0093f44948c0f4
    Patch
  • github.com https://github.com/python/cpython/issues/146581
    ExploitIssue TrackingPatchVendor Advisory
  • github.com https://github.com/python/cpython/pull/146591
    Issue TrackingPatch