CVE-2026-1703: Pip Path Traversal Vulnerability

LOW
Advisory Identifier: GHSA-6vgw-5pg2-w6jp
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CWE-22
Published
Advisory Summary

CVE-2026-1703 is a LOW path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Pip libraries in the PyPI ecosystem. The issue involves pip path traversal vulnerability. Remediation is available by upgrading affected packages to version 26.0.

CVE-2026-1703 at a Glance

CVE Identifier CVE-2026-1703
GHSA Identifier GHSA-6vgw-5pg2-w6jp
Severity LOW
CVSS v3.1 Base Score N/A
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Pip
Package Ecosystem PyPI
Published Date
Last Updated

How to Fix CVE-2026-1703

To remediate this vulnerability, upgrade all affected Pip dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

pip fixed: 26.0 
pip install pip>=26.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show pip

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2026-1703, inspect your installed packages using pip:

pip show pip

Analyze the terminal output to locate any version of Pip in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 26.0), your application is affected.

Note: The pip show pip command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In Pip, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

When pip is installing and extracting a maliciously crafted wheel archive, files may be extracted outside the installation directory. The path traversal is limited to prefixes of the installation directory, thus isn't able to inject or overwrite executable files in typical situations.

CVE-2026-1703 Affected Pip Versions

1 component(s)
Fixed Versions:
26.0
Product / Package Ecosystem Affected Versions Fixed Version
pip
pypi/pip
PyPI
< 26.0
26.0

References

NVD — CVE-2026-1703 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-1703
Pip Source Repository REPOSITORY
https://github.com/pypa/pip/pull/13777
Security Fix Commit FIX COMMIT
https://github.com/pypa/pip/commit/8e227a9be4faa9594e05d02ca05a413a2a4e7735
Pip Source Repository REPOSITORY
https://github.com/pypa/pip
Pip Security Information SECURITY
https://mail.python.org/archives/list/security-announce@python.org/thread/WIEA34D4TABF2UNQJAOMXKCICSPBE2DJ

Frequently Asked Questions

What is CVE-2026-1703?
CVE-2026-1703 is a security vulnerability in Pip involving pip Path Traversal vulnerability under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Pip versions are affected?
Affected versions include releases prior to 26.0 across affected packages: pip.
What version fixes CVE-2026-1703?
Upgrading to 26.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is pip affected?
Yes, pip is affected in releases prior to 26.0. Upgrade your dependency to 26.0 or later.
What CWE is associated with CVE-2026-1703?
CVE-2026-1703 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).
How can I check PyPI dependencies for CVE-2026-1703?
Run the dependency tree command: 'pip show pip'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-6vgw-5pg2-w6jp",
  "modified" : "2026-02-02T22:08:51Z",
  "published" : "2026-02-02T15:30:34Z",
  "aliases" : [ "CVE-2026-1703" ],
  "summary" : "pip Path Traversal vulnerability",
  "details" : "When pip is installing and extracting a maliciously crafted wheel archive, files may be extracted outside the installation directory. The path traversal is limited to prefixes of the installation directory, thus isn't able to inject or overwrite executable files in typical situations.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "pip"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "26.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-1703"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/pip/pull/13777"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/pip/commit/8e227a9be4faa9594e05d02ca05a413a2a4e7735"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/pypa/pip"
  }, {
    "type" : "WEB",
    "url" : "https://mail.python.org/archives/list/security-announce@python.org/thread/WIEA34D4TABF2UNQJAOMXKCICSPBE2DJ"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-02-02T22:08:51Z",
    "nvd_published_at" : "2026-02-02T15:16:30Z"
  }
}