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

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:H

Attack vector

Network

Complexity

Low

Privileges

Low

User interaction

Required

Confidentiality

None

Integrity

High

Availability

High

Scope

Changed

Exploitation

Is it being used?

Exploit prediction (EPSS)0.3% · higher than 22% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

PO

poetry · python-poetry

< 2.3.4 · source: vendor

RH

Red Hat Ansible Automation Platform 2 · Red Hat

All versions, or not specified · source: CISA

RH

Red Hat Ansible Automation Platform 2.6 · Red Hat

All versions, or not specified · source: CISA

RH

Red Hat OpenShift Container Platform 4 · Red Hat

All versions, or not specified · source: CISA