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CVE-2026-1703— Limited path traversal when installing wheel archives

Quick assessment

Affected
Python Packaging Authority pip
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

pip是Python Packaging Authority开源的一个Python包安装程序。 pip存在安全漏洞，该漏洞源于安装恶意制作的wheel存档时可能发生路径遍历，可能导致文件被提取到安装目录之外。

AI Predicted 5.9 Difficulty: Moderate EPSS 0.44% · P38

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2026-1703

Vulnerability Information
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Vulnerability Title
Limited path traversal when installing wheel archives
Source: CVE Program / CVE List V5
Vulnerability Description
When pip is installing and extracting a maliciously crafted wheel archive, files may be extracted outside the installation directory. The path traversal is limited to prefixes of the installation directory, thus isn't able to inject or overwrite executable files in typical situations.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
pip 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
pip是Python Packaging Authority开源的一个Python包安装程序。 pip存在安全漏洞，该漏洞源于安装恶意制作的wheel存档时可能发生路径遍历，可能导致文件被提取到安装目录之外。
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 Packaging Authority pip 0 ~ 26.0 -

II. Public POCs for CVE-2026-1703

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III. Intelligence Information for CVE-2026-1703

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IV. Related Vulnerabilities

Same product: pip
Same vendor: Python Packaging Authority
Same weakness: CWE-22