CVE-2026-34591 HIGH

CVE-2026-34591: Poetry Has Wheel Path Traversal Which Can Lead to Arbitrary File Write

Vendor Python-Poetry
Product poetry
Weakness CWE-22 · Path traversal
Published April 2, 2026
Last update April 3, 2026

CVSS base score

7.1/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

Poetry is a dependency manager for Python. From version 1.4.0 to before version 2.3.3, a crafted wheel can contain ../ paths that Poetry writes to disk without containment checks, allowing arbitrary file write with the privileges of the Poetry process. It is reachable from untrusted package artifacts during normal install flows. (Normally, installing a malicious wheel is not sufficient for execution of malicious code. Malicious code will only be executed after installation if the malicious package is imported or invoked by the user.). This issue has been patched in version 2.3.3.

Key dates

02Disclosure timeline

April 2, 2026 CVE published
April 3, 2026 Record updated