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CVE-2026-5271— Possible to hijack modules in current working directory

Quick assessment

Affected
Python Software Foundation pymanager
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.

Python Install Manager是Python开源的一个Python安装管理工具。 Python Install Manager存在安全漏洞，该漏洞源于将当前工作目录包含在sys.path中，可能导致从攻击者控制的目录导入并执行恶意模块。

AI Predicted 6.6 Difficulty: Easy EPSS 0.19% · P7

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2026-5271

Vulnerability Information
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Vulnerability Title
Possible to hijack modules in current working directory
Source: CVE Program / CVE List V5
Vulnerability Description
pymanager included the current working directory in sys.path meaning modules could be shadowed by modules in the current working directory. As a result, if a user executes a pymanager-generated command (e.g., pip, pytest) from an attacker-controlled directory, a malicious module in that directory can be imported and executed instead of the intended package.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/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
Python Install Manager 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Python Install Manager是Python开源的一个Python安装管理工具。 Python Install Manager存在安全漏洞，该漏洞源于将当前工作目录包含在sys.path中，可能导致从攻击者控制的目录导入并执行恶意模块。
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 pymanager 26.0 ~ 26.1 -

II. Public POCs for CVE-2026-5271

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III. Intelligence Information for CVE-2026-5271

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Vendor Advisories for CVE-2026-5271 (1)

IV. Related Vulnerabilities

Same vendor: Python Software Foundation

V. Comments for CVE-2026-5271

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