ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2026-104843

uv: Path traversal on Windows through wheel extraction

Published Oct 5, 2026 · catalog updated Oct 15, 2026 · uv: Path traversal on

Check if you run it

No confirmed exploitation is on record for CVE-2026-104843. EPSS is 0.43%. Act only if a listed version of uv: Path traversal on is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (uv: Path traversal on).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Unknown—
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.43%
Remediation
Advisory link
Affected products
PyPI uv · crates.io uv

### Impact In versions of uv from 0.12.7 to 0.12.18 on Windows, uv could be induced into writing a file outside of the installation prefix during wheel installation. A malicious wheel could use this to place an executable outside of the intended environment, including in a directory already present on the user's PATH. This vulnerability only affects Windows hosts; no other platforms are affected. ### Patches uv 0.12.18 and newer address this vulnerability. Users are encouraged to upgrade to 0.12.18. ### Workarounds There is no workaround other than upgrading to uv 0.12.18.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • PyPI uv0.12.7 → 0.12.18
  • crates.io uv0.12.7 → 0.12.18

How to fix CVE-2026-104843

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-104843. EPSS is 0.43%. Act only if a listed version of uv: Path traversal on is installed.

Which versions are affected?

Compare what you have installed with 0.12.7 → 0.12.18. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-22: Path Traversal. EPSS 0.43%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Windows security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 5, 2026 · GitHub Advisory Database

    Detected

    ### Impact In versions of uv from 0.12.7 to 0.12.18 on Windows, uv could be induced into writing a file outside of the installation prefix during wheel installation. A malicious wheel could use this to place an executable outside of the intended environment, including in a directory already present on the user's PATH. This vulnerability only affects Windows hosts; no other platforms are affected.

  2. Oct 15, 2026 · GitHub Advisory Database

    Fix available

    uv fixed in 0.12.18; uv fixed in 0.12.18

  3. Oct 15, 2026 · GitHub Advisory Database

    Fix available

    uv fixed in 0.12.18

  4. Oct 15, 2026 · GitHub Advisory Database

    Updated

    ### Impact In versions of uv from 0.12.7 to 0.12.18 on Windows, uv could be induced into writing a file outside of the installation prefix during wheel installation. A malicious wheel could use this to place an executable outside of the intended environment, including in a directory already present on the user's PATH. This vulnerability only affects Windows hosts; no other platforms are affected.

Sources

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.