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Vulnerabilities

Security incident · CVE-2025-71437

Directory Traversal

Published Oct 21, 2026 · catalog updated Oct 21, 2026 · Directory Traversal

Last checked Nov 6, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-71437. EPSS is 0.34%. Act only if a listed version of Directory Traversal is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Directory Traversal).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.7
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.34%
Remediation
Advisory link
Affected products
package pip

Astral uv before 0.8.22 contains a path traversal vulnerability in source distribution (sdist) tar extraction that allows a specially crafted sequence of symlinks to redirect file writes outside the intended extraction prefix. Attackers can publish a malicious sdist that, when installed by a victim, writes arbitrary files to filesystem locations outside the installation prefix.

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.

  • package pipversion unspecified

How to fix CVE-2025-71437

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-2025-71437. EPSS is 0.34%. Act only if a listed version of Directory Traversal is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-22: Path Traversal. EPSS 0.34%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

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

Timeline

Detection, updates, and resolution for this record.

  1. Oct 21, 2026 · NIST NVD

    Detected

    Astral uv before 0.8.22 contains a path traversal vulnerability in source distribution (sdist) tar extraction that allows a specially crafted sequence of symlinks to redirect file writes outside the intended extraction prefix. Attackers can publish a malicious sdist that, when installed by a victim, writes arbitrary files to filesystem locations outside the installation prefix.

  2. Oct 21, 2026 · NIST NVD

    Updated

    Astral uv before 0.8.22 contains a path traversal vulnerability in source distribution (sdist) tar extraction that allows a specially crafted sequence of symlinks to redirect file writes outside the intended extraction prefix. Attackers can publish a malicious sdist that, when installed by a victim, writes arbitrary files to filesystem locations outside the installation prefix.

Sources

  • CVE.orgVulnerability recordCVE-2025-71437

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-71437

    30-day exploitation probability 0.34%

    first.org
  • NIST NVDVulnerability recordCVE-2025-71437

    Astral uv before 0.8.22 contains a path traversal vulnerability in source distribution (sdist) tar extraction that allows a specially crafted sequence of symlinks to redirect file writes outside the intended extraction prefix. Attackers can publish a malicious sdist that, when in

    nvd.nist.gov
  • Snyk Vulnerability DatabasePackage advisorySNYK-PYTHON-UV-21347791

    Directory Traversal

    security.snyk.io

References

Freshness

Last verified in this catalog Nov 6, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 6, 2026
  • Snyk Vulnerability DatabaseOct 23, 2026
  • CVE.orgOct 21, 2026
  • NIST NVDOct 21, 2026