CVE-2026-104843

uv: Path traversal on Windows through wheel extraction

Published Oct 2, 2026 CVSS 4.0 · 5.9 Medium EPSS < 1% KEV · Not listed
Description
uv is a Python package and project manager written in Rust. From 0.12.7 until 0.12.18, uv wheel extraction on Windows can process a malicious wheel in a way that writes a file outside the installation prefix, including an executable in a directory already present on the user's PATH. Non-Windows hosts are not affected. This issue is fixed in version 0.12.18.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-2cv4-cqwr-gwf7 uv: Path traversal on Windows through wheel extraction
History
Type Values Removed Values Added
First Time appeared Astral
Astral uv
Vendors & Products Astral
Astral uv
Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

threat_severity

Important

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description uv is a Python package and project manager written in Rust. From 0.12.7 until 0.12.18, uv wheel extraction on Windows can process a malicious wheel in a way that writes a file outside the installation prefix, including an executable in a directory already present on the user's PATH. Non-Windows hosts are not affected. This issue is fixed in version 0.12.18.
Title uv: Path traversal on Windows through wheel extraction
Weaknesses CWE-22
References
Metrics cvssV4_0

{'score': 5.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Oct 2, 2026, 4:00 PM
Reserved
Oct 2, 2026, 2:38 PM
Status
Awaiting Analysis
Published
Oct 2, 2026, 4:16 PM
Modified
Oct 2, 2026, 6:44 PM
Severity
Important
Public date
Oct 2, 2026, 3:29 PM