Vulnerability-Lookup

PYSEC-2026-1477

Vulnerability from pysec - Published: 2026-07-07 16:02 - Updated: 2026-07-07 17:24

Details

Impact

On Windows, the shared %PROGRAMDATA% directory is searched for configuration files (SYSTEM_CONFIG_PATH and SYSTEM_JUPYTER_PATH), which may allow users to create configuration files affecting other users.

Only shared Windows systems with multiple users and unprotected %PROGRAMDATA% are affected.

Mitigations

upgrade to jupyter_core>=5.8.1 (5.8.0 is patched but breaks jupyter-server) , or
as administrator, modify the permissions on the %PROGRAMDATA% directory so it is not writable by unauthorized users, or
as administrator, create the %PROGRAMDATA%\jupyter directory with appropriately restrictive permissions, or
as user or administrator, set the %PROGRAMDATA% environment variable to a directory with appropriately restrictive permissions (e.g. controlled by administrators or the current user)

Credit

Reported via Trend Micro Zero Day Initiative as ZDI-CAN-25932

Severity

7.3 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Impacted products

Name	purl
jupyter-core	pkg:pypi/jupyter-core

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "jupyter-core",
        "purl": "pkg:pypi/jupyter-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.8.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.0.0",
        "4.0.0.dev",
        "4.0.1",
        "4.0.2",
        "4.0.3",
        "4.0.4",
        "4.0.5",
        "4.0.6",
        "4.1.0",
        "4.1.1",
        "4.10.0",
        "4.11.0",
        "4.11.1",
        "4.11.2",
        "4.12.0",
        "4.2.0",
        "4.2.1",
        "4.3.0",
        "4.4.0",
        "4.5.0",
        "4.6.0",
        "4.6.1",
        "4.6.2",
        "4.6.3",
        "4.7.0",
        "4.7.0rc0",
        "4.7.1",
        "4.8.0",
        "4.8.0b0",
        "4.8.0rc0",
        "4.8.0rc1",
        "4.8.1",
        "4.8.2",
        "4.9.0",
        "4.9.0rc0",
        "4.9.1",
        "4.9.1rc0",
        "4.9.2",
        "5.0.0",
        "5.0.0rc0",
        "5.0.0rc1",
        "5.0.0rc2",
        "5.1.0",
        "5.1.1",
        "5.1.2",
        "5.1.3",
        "5.1.4",
        "5.1.5",
        "5.2.0",
        "5.3.0",
        "5.3.1",
        "5.3.2",
        "5.4.0",
        "5.5.0",
        "5.5.1",
        "5.6.0",
        "5.6.1",
        "5.7.0",
        "5.7.1",
        "5.7.2",
        "5.8.0"
      ]
    }
  ],
  "aliases": [
    "CVE-2025-30167",
    "GHSA-33p9-3p43-82vq"
  ],
  "details": "## Impact\n\nOn Windows, the shared `%PROGRAMDATA%` directory is searched for configuration files (`SYSTEM_CONFIG_PATH` and `SYSTEM_JUPYTER_PATH`), which may allow users to create configuration files affecting other users.\n\nOnly shared Windows systems with multiple users and unprotected `%PROGRAMDATA%` are affected.\n\n## Mitigations\n\n- upgrade to `jupyter_core\u003e=5.8.1` (5.8.0 is patched but breaks `jupyter-server`) , or\n- as administrator, modify the permissions on the `%PROGRAMDATA%` directory so it is not writable by unauthorized users, or\n- as administrator, create the `%PROGRAMDATA%\\jupyter` directory with appropriately restrictive permissions, or\n- as user or administrator, set the `%PROGRAMDATA%` environment variable to a directory with appropriately restrictive permissions (e.g. controlled by administrators _or_ the current user)\n\n## Credit\n\nReported via Trend Micro Zero Day Initiative as ZDI-CAN-25932",
  "id": "PYSEC-2026-1477",
  "modified": "2026-07-07T17:24:22.401186Z",
  "published": "2026-07-07T16:02:53.654510Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/jupyter/jupyter_core/security/advisories/GHSA-33p9-3p43-82vq"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-30167"
    },
    {
      "type": "WEB",
      "url": "https://github.com/jupyter/jupyter_core/commit/5e8965600adda6b416692ce7e85ecb2bd814bd52"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/jupyter/jupyter_core"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/jupyter-core"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-33p9-3p43-82vq"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Jupyter Core on Windows Has Uncontrolled Search Path Element Local Privilege Escalation Vulnerability"
}

CVE-2025-30167 (GCVE-0-2025-30167)

Vulnerability from cvelistv5 – Published: 2025-06-03 16:42 – Updated: 2026-01-23 16:31

Title

Jupyter Core on Windows Has Uncontrolled Search Path Element Local Privilege Escalation Vulnerability

Summary

Jupyter Core is a package for the core common functionality of Jupyter projects. When using Jupyter Core prior to version 5.8.0 on Windows, the shared `%PROGRAMDATA%` directory is searched for configuration files (`SYSTEM_CONFIG_PATH` and `SYSTEM_JUPYTER_PATH`), which may allow users to create configuration files affecting other users. Only shared Windows systems with multiple users and unprotected `%PROGRAMDATA%` are affected. Users should upgrade to Jupyter Core version 5.8.0 or later to receive a patch. Some other mitigations are available. As administrator, modify the permissions on the `%PROGRAMDATA%` directory so it is not writable by unauthorized users; or as administrator, create the `%PROGRAMDATA%\jupyter` directory with appropriately restrictive permissions; or as user or administrator, set the `%PROGRAMDATA%` environment variable to a directory with appropriately restrictive permissions (e.g. controlled by administrators _or_ the current user).

Severity

7.3 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-06-03 17:34 UTC

CWE

CWE-427 - Uncontrolled Search Path Element

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/jupyter/jupyter_core/security/…	x_refsource_CONFIRM
https://github.com/jupyter/jupyter_core/commit/5e…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
jupyter	jupyter_core	Affected: < 5.8.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-30167",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-06-03T17:34:39.597862Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-06-03T17:34:46.033Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "jupyter_core",
          "vendor": "jupyter",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 5.8.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Jupyter Core is a package for the core common functionality of Jupyter projects. When using Jupyter Core prior to version 5.8.0 on Windows, the shared `%PROGRAMDATA%` directory is searched for configuration files (`SYSTEM_CONFIG_PATH` and `SYSTEM_JUPYTER_PATH`), which may allow users to create configuration files affecting other users. Only shared Windows systems with multiple users and unprotected `%PROGRAMDATA%` are affected. Users should upgrade to Jupyter Core version 5.8.0 or later to receive a patch. Some other mitigations are available. As administrator, modify the permissions on the `%PROGRAMDATA%` directory so it is not writable by unauthorized users; or as administrator, create the `%PROGRAMDATA%\\jupyter` directory with appropriately restrictive permissions; or as user or administrator, set the `%PROGRAMDATA%` environment variable to a directory with appropriately restrictive permissions (e.g. controlled by administrators _or_ the current user)."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-427",
              "description": "CWE-427: Uncontrolled Search Path Element",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-23T16:31:03.690Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/jupyter/jupyter_core/security/advisories/GHSA-33p9-3p43-82vq",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/jupyter/jupyter_core/security/advisories/GHSA-33p9-3p43-82vq"
        },
        {
          "name": "https://github.com/jupyter/jupyter_core/commit/5e8965600adda6b416692ce7e85ecb2bd814bd52",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/jupyter/jupyter_core/commit/5e8965600adda6b416692ce7e85ecb2bd814bd52"
        }
      ],
      "source": {
        "advisory": "GHSA-33p9-3p43-82vq",
        "discovery": "UNKNOWN"
      },
      "title": "Jupyter Core on Windows Has Uncontrolled Search Path Element Local Privilege Escalation Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-30167",
    "datePublished": "2025-06-03T16:42:16.357Z",
    "dateReserved": "2025-03-17T12:41:42.568Z",
    "dateUpdated": "2026-01-23T16:31:03.690Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

GHSA-33P9-3P43-82VQ

Vulnerability from github – Published: 2025-06-04 21:00 – Updated: 2026-01-23 16:31

Summary

Jupyter Core on Windows Has Uncontrolled Search Path Element Local Privilege Escalation Vulnerability

Details

Impact

Only shared Windows systems with multiple users and unprotected %PROGRAMDATA% are affected.

Mitigations

upgrade to jupyter_core>=5.8.1 (5.8.0 is patched but breaks jupyter-server) , or
as administrator, modify the permissions on the %PROGRAMDATA% directory so it is not writable by unauthorized users, or
as administrator, create the %PROGRAMDATA%\jupyter directory with appropriately restrictive permissions, or
as user or administrator, set the %PROGRAMDATA% environment variable to a directory with appropriately restrictive permissions (e.g. controlled by administrators or the current user)

Credit

Reported via Trend Micro Zero Day Initiative as ZDI-CAN-25932

Severity

7.3 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c 5.8.0"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "jupyter_core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.8.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-30167"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-427"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-06-04T21:00:23Z",
    "nvd_published_at": "2025-06-03T17:15:21Z",
    "severity": "HIGH"
  },
  "details": "## Impact\n\nOn Windows, the shared `%PROGRAMDATA%` directory is searched for configuration files (`SYSTEM_CONFIG_PATH` and `SYSTEM_JUPYTER_PATH`), which may allow users to create configuration files affecting other users.\n\nOnly shared Windows systems with multiple users and unprotected `%PROGRAMDATA%` are affected.\n\n## Mitigations\n\n- upgrade to `jupyter_core\u003e=5.8.1` (5.8.0 is patched but breaks `jupyter-server`) , or\n- as administrator, modify the permissions on the `%PROGRAMDATA%` directory so it is not writable by unauthorized users, or\n- as administrator, create the `%PROGRAMDATA%\\jupyter` directory with appropriately restrictive permissions, or\n- as user or administrator, set the `%PROGRAMDATA%` environment variable to a directory with appropriately restrictive permissions (e.g. controlled by administrators _or_ the current user)\n\n## Credit\n\nReported via Trend Micro Zero Day Initiative as ZDI-CAN-25932",
  "id": "GHSA-33p9-3p43-82vq",
  "modified": "2026-01-23T16:31:13Z",
  "published": "2025-06-04T21:00:23Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/jupyter/jupyter_core/security/advisories/GHSA-33p9-3p43-82vq"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-30167"
    },
    {
      "type": "WEB",
      "url": "https://github.com/jupyter/jupyter_core/commit/5e8965600adda6b416692ce7e85ecb2bd814bd52"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/jupyter/jupyter_core"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Jupyter Core on Windows Has Uncontrolled Search Path Element Local Privilege Escalation Vulnerability"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

PYSEC-2026-1477

Impact

Mitigations

Credit

CVE-2025-30167 (GCVE-0-2025-30167)

GHSA-33P9-3P43-82VQ

Impact

Mitigations

Credit

Tags

Sightings

Nomenclature

Related by attack behaviour