uv: Path traversal on Windows through wheel extraction
Priority LOW 27CWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Active
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Partial Red Hat: 1 fixed, 4 without a fix
Attack profile from CVSS 4.0 · CNA. Fix status from CNA, GitHub and Red Hat.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0042 36th percentileScored 2026-11-07
Fix Partial uv (astral-sh): 0.12.18uv (PyPI): 0.12.18+1 more productRed Hat: 1 advisoryRed Hat: 1 fixed, 4 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| astral-sh | uv | 0.12.7 to before 0.12.18 | 0.12.18 | Patch available | CNA |
| — | uv (PyPI) | 0.12.7 to before 0.12.18 | 0.12.18 | Patch available | GHSA-2cv4-cqwr-gwf7 |
| — | uv (crates.io) | 0.12.7 to before 0.12.18 | 0.12.18 | Patch available | GHSA-2cv4-cqwr-gwf7 |
- uv Vendorastral-sh Affected 0.12.7 to before 0.12.18 Fixed in 0.12.18 Patch available CNA
- uv (PyPI) Vendor— Affected 0.12.7 to before 0.12.18 Fixed in 0.12.18 Patch available GHSA-2cv4-cqwr-gwf7
- uv (crates.io) Vendor— Affected 0.12.7 to before 0.12.18 Fixed in 0.12.18 Patch available GHSA-2cv4-cqwr-gwf7
Remediation
- Fix · CNA uv (astral-sh) Fixed in 0.12.18
- Fix · GHSA-2cv4-cqwr-gwf7 uv (PyPI) Fixed in 0.12.18 Advisory →
- Fix · GHSA-2cv4-cqwr-gwf7 uv (crates.io) Fixed in 0.12.18 Advisory →
Red Hat 1 advisory
- RHSA-2026:84734 Released 2026-10-19 · Red Hat rating CriticalRHOAI 3.4.5 - Red Hat OpenShift AI
- Red Hat OpenShift AI 3.4 registry.redhat.io/rhoai/odh-ai-gateway-payload-processing-rhel9, registry.redhat.io/rhoai/odh-automl-rhel9, registry.redhat.io/rhoai/odh-autorag-rhel9 +47
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Lightspeed Core | Affected | No fix yet |
| OpenShift Lightspeed | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux AI (RHEL AI) 3 | Affected | No fix yet |
| Red Hat OpenShift AI (RHOAI) | Affected | No fix yet |
| Red Hat OpenShift AI 3.4 | Fixed | RHSA-2026:84734 |
Not affected: 5 products
- Lightspeed Services for Advanced Cluster Management
- Red Hat AI Inference Server
- Red Hat Hardened Images
- Red Hat OpenShift AI (RHOAI)
- Red Hat OpenShift AI 3.4
Timeline
- 2026-10-02 Threatist record created from CVE-2026-104843
- 2026-10-05 Affected versions changed · Red Hat
- 2026-10-06 Alias added: GHSA-2cv4-cqwr-gwf7
- 2026-10-06 Fix available: PyPI/[email protected], crates.io/[email protected] · GHSA-2cv4-cqwr-gwf7
- 2026-10-06 CVSS score added · GHSA-2cv4-cqwr-gwf7
- 2026-10-06 Weakness changed · GHSA-2cv4-cqwr-gwf7
- 2026-10-06 6 new references · GHSA-2cv4-cqwr-gwf7
- 2026-10-06 Affected versions changed · Red Hat
- 2026-10-20 Fix available: RHSA-2026:84734 · Red Hat
- 2026-10-20 Fix available: Red Hat OpenShift AI 3.4 · Red Hat
- 2026-11-05 Affected versions changed · Red Hat
References
More astral-sh vulnerabilities
- TI-2025-38758 astral-tokio-tar Vulnerable to PAX Header Desynchronization CVSS 3.1HIGH 8.1
- TI-2026-78723 Path traversal in Astral uv lets attackers delete arbitrary files CVSS 4.0HIGH 8.7
- TI-2025-43946 Path traversal in Astral uv sdist extraction allows file writes CVSS 4.0HIGH 8.7
- TI-2026-78722 Path traversal in uv lets malicious wheels write files CVSS 4.0HIGH 8.7
- TI-2025-34180 uv is vulnerable to ZIP payload obfuscation through parsing differentials CVSS 4.0MEDIUM 6.8
- TI-2025-37264 astral-tokio-tar has a path traversal in tar extraction CVSS 4.0MEDIUM 6.1
Sources
- CVE-2026-104843 · CVE Program
- CVE-2026-104843 · NVD
- FIRST EPSS
- GHSA-2cv4-cqwr-gwf7 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-104843 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences