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Advisory record · GHSA-2cv4-cqwr-gwf7

uv: Path traversal on Windows through wheel extraction

CVSS 5.9 MediumEPSS 0.0042 · 36th percentile

Published by the GitHub Advisory Database at 5 Oct 2026, 23:42 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
uvPyPI>=0.12.7, <0.12.180.12.18
uvcrates.io>=0.12.7, <0.12.180.12.18
Identifiers
GHSA-2cv4-cqwr-gwf7 · CVE-2026-104843 · PYSEC-2026-4305
Weakness (CWE)
CWE-22
Tags
Published
5 Oct 2026
Updated
15 Oct 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

uv versions 0.12.7 through 0.12.18 (not including 0.12.18) on Windows can be induced to write files outside the installation prefix during wheel installation. An attacker who supplies a malicious wheel could place an executable outside the intended environment, including in a directory on the user's PATH. Upgrade to uv 0.12.18 or newer; the source lists no workaround other than upgrading.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
5.9 Medium 4.0 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 CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0042, the 36th percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:08 UTC First seen by agentprime
  2. 31 Oct 2026, 14:08 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.