Medium 5.9Published Oct 2, 2026

CVE-2026-104843uv: Path traversal on Windows through wheel extraction

Updated under an hour ago (2026-10-19 06:30 UTC)

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It affects astral-sh uv. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for astral-sh uv

Exploited in the last 30 days

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.

CVSS: 5.9 MEDIUM (v4.0, CNA)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
Weakness (CWE): CWE-22
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Awaiting Analysis
Record last updated: Oct 2, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

astral-sh uv astral_sh:uv (from the name)	from 0.12.7, < 0.12.18	CNA record

References

https://github.com/astral-sh/uv/security/advisories/GHSA-2cv4-cqwr-gwf7x-refsource-confirm
https://github.com/astral-sh/uv/pull/21923x-refsource-misc
https://github.com/astral-sh/uv/commit/67169645278ce082638d619beefa6d062540843bx-refsource-misc
https://github.com/astral-sh/uv/releases/tag/0.12.18x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.