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CVE-2026-41140— Poetry: Path traversal in tar extraction on Python 3.10.0 - 3.10.12 and 3.11.0 - 3.11.4

Quick assessment

Affected
python-poetry poetry
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.

Poetry是Poetry开源的一款Python中用于依赖管理和打包的工具。 Poetry 2.3.4之前版本存在路径遍历漏洞，该漏洞源于extractall函数在tarfile.data_filter不可用的Python版本上提取sdist tarball时缺乏路径遍历保护。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.47% · P39

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProduct Version RangeStatus
python-poetry poetry < 2.3.4 affected
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I. Basic Information for CVE-2026-41140

Vulnerability Information
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Vulnerability Title
Poetry: Path traversal in tar extraction on Python 3.10.0 - 3.10.12 and 3.11.0 - 3.11.4
Source: CVE Program / CVE List V5
Vulnerability Description
Poetry is a dependency manager for Python. Prior to 2.3.4, the extractall() function in src/poetry/utils/helpers.py:410-426 extracts sdist tarballs without path traversal protection on Python versions where tarfile.data_filter is unavailable. Considering only Python versions which are still supported by Poetry, these are 3.10.0 - 3.10.12 and 3.11.0 - 3.11.4. This vulnerability is fixed in 2.3.4.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U
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
Poetry 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Poetry是Poetry开源的一款Python中用于依赖管理和打包的工具。 Poetry 2.3.4之前版本存在路径遍历漏洞，该漏洞源于extractall函数在tarfile.data_filter不可用的Python版本上提取sdist tarball时缺乏路径遍历保护。
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-poetry poetry < 2.3.4 -

II. Public POCs for CVE-2026-41140

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III. Intelligence Information for CVE-2026-41140

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Vendor Advisories for CVE-2026-41140 (1)

IV. Related Vulnerabilities

Same product: poetry
Same vendor: python-poetry
Same weakness: CWE-22

V. Comments for CVE-2026-41140

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