CVE-2026-35167: Kedro Path Traversal Vulnerability

HIGH
Advisory Identifier: GHSA-6326-w46w-ppjw
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CVSS 7.1
CWE-22
Published
Advisory Summary

CVE-2026-35167 is a HIGH (CVSS 7.1) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Kedro libraries in the PyPI ecosystem. The issue involves path traversal in versioned dataset loading via unsanitized version string. Remediation is available by upgrading affected packages to version 1.3.0.

CVE-2026-35167 at a Glance

CVE Identifier CVE-2026-35167
GHSA Identifier GHSA-6326-w46w-ppjw
Severity HIGH
CVSS v3.1 Base Score 7.1
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Kedro
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 7.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2026-35167

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

kedro fixed: 1.3.0 
pip install kedro>=1.3.0
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 kedro

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2026-35167, inspect your installed packages using pip:

pip show kedro

Analyze the terminal output to locate any version of Kedro in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.3.0), your application is affected.

Note: The pip show kedro 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 Kedro, 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

### Impact The `_get_versioned_path()` method in kedro/io/core.py constructs filesystem paths by directly interpolating user-supplied version strings without sanitization. Because version strings are used as path components, traversal sequences such as ../ are preserved and can escape the intended versioned dataset directory. This is reachable through multiple entry points: `catalog.load(..., version=...)`, `DataCatalog.from_config(..., load_versions=...)`, and the CLI via `kedro run --load-versions=dataset:../../../secrets`. An attacker who can influence the version string can force Kedro to load files from outside the intended version directory, enabling unauthorized file reads, data poisoning, or cross-tenant data access in shared environments. ### Patches Yes. Fixed in kedro version 1.3.0. Users should upgrade to kedro >= 1.3.0. ### Workarounds Validate version strings before passing them to DataCatalog or the CLI, ensuring they do not contain `..` segments, path separators, or absolute paths.

CVE-2026-35167 Affected Kedro Versions

1 component(s)
Fixed Versions:
1.3.0
Product / Package Ecosystem Affected Versions Fixed Version
kedro
pypi/kedro
PyPI
< 1.3.0
1.3.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/kedro-org/kedro/security/advisories/GHSA-6326-w46w-ppjw
NVD — CVE-2026-35167 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-35167
Kedro Source Repository REPOSITORY
https://github.com/kedro-org/kedro/pull/5442
Kedro Source Repository REPOSITORY
https://github.com/kedro-org/kedro
Kedro Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/kedro/PYSEC-2026-71.yaml

Frequently Asked Questions

What is CVE-2026-35167?
CVE-2026-35167 is a security vulnerability in Kedro involving Path Traversal in versioned dataset loading via unsanitized version string under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Kedro versions are affected?
Affected versions include releases prior to 1.3.0 across affected packages: kedro.
What version fixes CVE-2026-35167?
Upgrading to 1.3.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is kedro affected?
Yes, kedro is affected in releases prior to 1.3.0. Upgrade your dependency to 1.3.0 or later.
What is the CVSS score of CVE-2026-35167?
CVE-2026-35167 has a CVSS v3.1 base score of 7.1 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N.
What CWE is associated with CVE-2026-35167?
CVE-2026-35167 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-2026-35167?
Run the dependency tree command: 'pip show kedro'. 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-6326-w46w-ppjw",
  "modified" : "2026-06-06T00:23:00Z",
  "published" : "2026-04-03T03:46:48Z",
  "aliases" : [ "CVE-2026-35167" ],
  "summary" : "Kedro: Path Traversal in versioned dataset loading via unsanitized version string",
  "details" : "### Impact\nThe `_get_versioned_path()` method in kedro/io/core.py constructs filesystem paths by directly interpolating user-supplied version strings without sanitization. Because version strings are used as path components, traversal sequences such as ../ are preserved and can escape the intended versioned dataset directory.\nThis is reachable through multiple entry points: `catalog.load(..., version=...)`, `DataCatalog.from_config(..., load_versions=...)`, and the CLI via `kedro run --load-versions=dataset:../../../secrets`. An attacker who can influence the version string can force Kedro to load files from outside the intended version directory, enabling unauthorized file reads, data poisoning, or cross-tenant data access in shared environments.\n\n### Patches\nYes. Fixed in kedro version 1.3.0. Users should upgrade to kedro >= 1.3.0.\n\n### Workarounds\nValidate version strings before passing them to DataCatalog or the CLI, ensuring they do not contain `..` segments, path separators, or absolute paths.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "kedro"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.3.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/kedro-org/kedro/security/advisories/GHSA-6326-w46w-ppjw"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-35167"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/kedro-org/kedro/pull/5442"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/kedro-org/kedro"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/kedro/PYSEC-2026-71.yaml"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-04-03T03:46:48Z",
    "nvd_published_at" : "2026-04-06T18:16:43Z"
  }
}