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CVE-2026-3219— pip doesn't reject concatenated ZIP and tar 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，该漏洞源于将连接的tar和ZIP文件视为ZIP文件，可能导致安装行为混乱。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.14% · P4
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I. Basic Information for CVE-2026-3219

Vulnerability Information
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Vulnerability Title
pip doesn't reject concatenated ZIP and tar archives
Source: CVE Program / CVE List V5
Vulnerability Description
pip handles concatenated tar and ZIP files as ZIP files regardless of filename or whether a file is both a tar and ZIP file. This behavior could result in confusing installation behavior, such as installing "incorrect" files according to the filename of the archive. New behavior only proceeds with installation if the file identifies uniquely as a ZIP or tar archive, not as both.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
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，该漏洞源于将连接的tar和ZIP文件视为ZIP文件，可能导致安装行为混乱。
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 ~ 26.1 -

II. Public POCs for CVE-2026-3219

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III. Intelligence Information for CVE-2026-3219

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Patches & Fixes for CVE-2026-3219 (1)

IV. Related Vulnerabilities

Same product: pip
Same vendor: Python Packaging Authority

V. Comments for CVE-2026-3219

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