What is CVE-2026-41140?

CVE-2026-41140 is a high-severity vulnerability in Python-Poetry Poetry, classified under Path Traversal. CVSS score: 8.7/10. Published 2026-04-24.

How severe is CVE-2026-41140?

High severity. CVSS v3 base score is 8.7 out of 10.

Path Traversal in Python-Poetry Poetry

CVE-2026-41140

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.

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.003 (21.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:H.

Affected products

Python-poetry Poetry — versions < 2.3.4

Weakness classification (CWE)

CWE-22 — Path Traversal

References

Frequently asked questions

What is CVE-2026-41140?: CVE-2026-41140 is a high-severity vulnerability in Python-Poetry Poetry, classified under Path Traversal. CVSS score: 8.7/10. Published 2026-04-24.
How severe is CVE-2026-41140?: High severity. CVSS v3 base score is 8.7 out of 10.