chore(deps): update dependency uv to v0.12.18 [security]

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
uv (source, changelog)	0.12.15 → 0.12.18

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uv: Path traversal on Windows through wheel extraction

CVE-2026-104843 / GHSA-2cv4-cqwr-gwf7

More information

Details

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.

Severity

• CVSS Score: 5.9 / 10 (Medium)
• Vector String: 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

References

• https://github.com/astral-sh/uv/security/advisories/GHSA-2cv4-cqwr-gwf7
• https://nvd.nist.gov/vuln/detail/CVE-2026-104843
• https://github.com/astral-sh/uv/pull/21923
• https://github.com/astral-sh/uv/commit/67169645278ce082638d619beefa6d062540843b
• https://github.com/astral-sh/uv/releases/tag/0.12.18
• https://github.com/advisories/GHSA-2cv4-cqwr-gwf7

This data is provided by the GitHub Advisory Database (CC-BY 4.0).

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Release Notes

astral-sh/uv (uv)

v0.12.18

Compare Source

Released on 2026-09-22.

This release addresses GHSA-2cv4-cqwr-gwf7, which is a path traversal weakness during wheel installation on Windows. No other platforms are affected by this advisory.

Enhancements

• Add --output-format json to uv pip install and uv pip sync, including for --dry-run and --check (#​21893)
• Add --check to uv pip install and uv pip sync to report planned changes without modifying the environment (#​21844)
• Identify failures from get_requires_for_build_* hooks correctly in build errors (#​21881)

Preview features

• Validate build requirements for uv build --no-build-isolation with --preview-features build-dependency-check; use --skip-dependency-check to opt out (#​21880)

Performance

• Speed up uv_build editable wheel creation by omitting compression from temporary wheels (#​21918)

Bug fixes

• Select package versions with wheels compatible with each Python resolution fork, correctly interpreting generic and stable-ABI wheel tags (#​21835, #​21836)
• Restore project, script, and lock files when uv add, uv remove, or uv version fails or is interrupted (#​21860, #​21856)
• Use configured dependency-metadata when checking whether installed requirements are satisfied (#​21843)
• Reject archive entries that normalize to absolute Windows paths (#​21923)
• Recognize distribution filenames and archive extensions when URL fragments contain ? (#​21920)
• Generate correctly lowercased platform tags for BSD and Haiku releases (#​21853)
• Avoid rebuilding a Windows relative path into an absolute form (#​21923)

v0.12.17

Compare Source

Released on 2026-09-18.

Enhancements

• Reject unsupported Git archive paths in lockfiles with a clear error instead of panicking during frozen exports (#​21780)

Preview features

• Set minimum glibc and musl versions that universal resolutions must support with minimum-libc-version (#​21651)
• Reject pylock.toml files whose wheel filenames do not match their declared package names or versions (#​20746)
• Keep uv workspace metadata read-only unless --sync is provided (#​21821)
• Apply uv check lock modes when retrieving workspace metadata (#​21821)

Performance

• Speed up builds with many exclusion patterns by avoiding quadratic deduplication (#​21650)
• Reduce resolver allocations when deduplicating package and distribution requests (#​21810)

Bug fixes

• Prevent required-environments from selecting package versions whose wheels require a newer macOS version than the configured Darwin baseline (#​21825)

Documentation

• Clarify the 0.12.14 and 0.12.15 release notes (#​21817)

v0.12.16

Compare Source

Released on 2026-09-17.

Python

• Add Pyodide 314.0.7, 0.29.5, and 0.27.8 (#​21741)

Enhancements

• Verify downloaded wheels and source distributions against hashes supplied by package indexes (#​21562)
• Allow build-constraint-dependencies entries to include hashes for verifying downloaded build dependencies (#​21467)
• Honor Darwin platform_release markers in required-environments using macOS wheel deployment targets (#​21766)
• Reject unsupported Git URL schemes while parsing lockfiles instead of panicking during frozen exports (#​21779)

Preview features

• Support lock-without-metadata across all dependency types while retaining package.metadata for remote URL dependencies to enable offline validation (#​21163)
• Honor configured and command-line index settings, including credentials, in uv upgrade (#​21776)
• Allow uv check to run in projects that are not managed by uv and outside workspaces (#​21777)
• Respect --python and UV_PYTHON when selecting the Python version for uv check (#​21744)

Bug fixes

• Redact Azure shared access signatures from displayed and logged URLs (#​21755)
• Check archive sizes from pylock.toml before reusing cached distributions (#​21609)
• Keep user-authored local dependency paths relative in lockfiles when backend metadata reports absolute paths (#​20631)
• Use the bundled uv_build backend only when its version matches active version pins (#​21742)
• Handle malformed index URLs without panicking when credentials are configured (#​21784)
• Report a configuration error instead of panicking for proxy URLs without a host (#​21781)
• Return a credential-redacted error instead of panicking when a URL cannot be converted to a path (#​21783)

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