CVE-2026-104843CWE-22path-traversal

CVE-2026-104843

published October 2, 2026

CVSS
5.9
EPSS
0%
Percentile
35.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
5.9 · NONE
CVSS v4.0
5.9 · 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
EPSS
0.00426 · 35.8th percentile
Weakness
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Published
2026-10-02T20:16Z
References (4)
https://github.com/astral-sh/uv/commit/67169645278ce082638d619beefa6d062540843b · [email protected]https://github.com/astral-sh/uv/pull/21923 · [email protected]https://github.com/astral-sh/uv/releases/tag/0.12.18 · [email protected]https://github.com/astral-sh/uv/security/advisories/GHSA-2cv4-cqwr-gwf7 · [email protected]
EPSS history
Timeline
  • 04 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 02 OCT 15:29Z
    uv: Path traversal on Windows through wheel extraction
    cvelistv5