PT-2026-29665 · Poetry+1 · Poetry+1

Bekkaze · Published 2026-04-01 · Updated 2026-06-08 · CVE-2026-34591

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:C/A:N

Name of the Vulnerable Software and Affected Versions Poetry versions 1.4.0 through 2.3.2

Description Poetry, a Python dependency manager, contains a path traversal flaw. A crafted wheel file can include '..' paths that Poetry writes to disk without proper containment checks. This allows for arbitrary file write with the privileges of the Poetry process, potentially impacting users, CI/CD systems, and installations of malicious or compromised packages. The issue is reachable during normal installation flows from untrusted package artifacts. The vulnerability occurs because Poetry directly joins an untrusted wheel entry path without enforcing a resolve() or is relative to() style guard before writing.

Recommendations Update to Poetry version 2.3.3 or later.

Exploit

Fix

DoS

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

BDU:2026-07551

CVE-2026-34591

GHSA-2599-H6XX-HPXP

Affected Products

Poetry

Red Os

References · 21

• 🔥 https://github.com/python-poetry/poetry/security/advisories/GHSA-2599-h6xx-hpxp · Exploit
• https://github.com/python-poetry/poetry/pull/10792 · Patch
• https://security-tracker.debian.org/tracker/CVE-2026-34591 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-34591 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-34591 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-34591 · Security Note
• http://github.com/python-poetry/poetry/commit/ed59537ac3709cfbdbf95d957de801c13872991a · Patch
• https://osv.dev/vulnerability/GHSA-2599-h6xx-hpxp · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-34591 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-07551 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-34591 · Security Note
• https://osv.dev/vulnerability/ROOT-APP-PYPI-CVE-2026-34591 · Vendor Advisory
• https://github.com/python-poetry/poetry/releases/tag/2.3.3 · Note
• https://github.com/python-poetry/poetry · Note
• https://twitter.com/mnh_18/status/2063991940639527364 · Twitter Post