CVE-2026-3087— shutil.unpack_archive() doesn't check for Windows absolute paths in ZIPs
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I. Basic Information for CVE-2026-3087
Vulnerability Information
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Vulnerability Title
shutil.unpack_archive() doesn't check for Windows absolute paths in ZIPs
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: NVD (National Vulnerability Database)
Vulnerability Title
CPython 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CPython是Python基金会的一个用C语言实现的Python解释器。 CPython存在路径遍历漏洞，该漏洞源于处理包含绝对Windows路径的ZIP归档时，可能导致归档提取到目标目录之外。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Python Software Foundation | CPython | 0 ~ 3.14.5rc1 | - |
II. Public POCs for CVE-2026-3087
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
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Same vendor: Python Software Foundation
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Same weakness: CWE-22
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