Vulnerability-Lookup

PYSEC-2026-1312

Vulnerability from pysec - Published: 2026-07-07 11:45 - Updated: 2026-07-07 17:24

Details

Impact

Users of JupyterHub deployments running DockerSpawner starting with 0.11.0 without specifying DockerSpawner.allowed_images configuration allow users to launch any pullable image, instead of restricting to only the single configured image, as intended.

Patches

Upgrade to DockerSpawner 13.

Workarounds

Explicitly setting DockerSpawner.allowed_images to a non-empty list containing only the default image will result in the intended default behavior:

c.DockerSpawner.image = "your-image"
c.DockerSpawner.allowed_images = ["your-image"]

Severity

4.3 (Medium)


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

Impacted products

Name	purl
dockerspawner	pkg:pypi/dockerspawner

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "dockerspawner",
        "purl": "pkg:pypi/dockerspawner"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.11.0"
            },
            {
              "fixed": "13.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.11.0",
        "0.11.1",
        "12.0.0",
        "12.1.0"
      ]
    }
  ],
  "aliases": [
    "CVE-2023-48311",
    "GHSA-hfgr-h3vc-p6c2"
  ],
  "details": "### Impact\n\nUsers of JupyterHub deployments running DockerSpawner starting with 0.11.0 without specifying `DockerSpawner.allowed_images` configuration allow users to launch _any_ pullable image, instead of restricting to only the single configured image, as intended.\n\n### Patches\n\nUpgrade to DockerSpawner 13.\n\n### Workarounds\n\nExplicitly setting `DockerSpawner.allowed_images` to a non-empty list containing only the default image will result in the intended default behavior:\n\n```python\nc.DockerSpawner.image = \"your-image\"\nc.DockerSpawner.allowed_images = [\"your-image\"]\n```\n",
  "id": "PYSEC-2026-1312",
  "modified": "2026-07-07T17:24:02.988455Z",
  "published": "2026-07-07T11:45:28.248139Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/jupyterhub/dockerspawner/security/advisories/GHSA-hfgr-h3vc-p6c2"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-48311"
    },
    {
      "type": "WEB",
      "url": "https://github.com/jupyterhub/dockerspawner/commit/3ba4b665b6ca6027ea7a032d7ca3eab977574626"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/jupyterhub/dockerspawner"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/dockerspawner"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-hfgr-h3vc-p6c2"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "DockerSpawner allows any image by default"
}

CVE-2023-48311 (GCVE-0-2023-48311)

Vulnerability from cvelistv5 – Published: 2023-12-08 20:08 – Updated: 2024-08-02 21:23

Title

Any image allowed by default

Summary

dockerspawner is a tool to spawn JupyterHub single user servers in Docker containers. Users of JupyterHub deployments running DockerSpawner starting with 0.11.0 without specifying `DockerSpawner.allowed_images` configuration allow users to launch _any_ pullable docker image, instead of restricting to only the single configured image, as intended. This issue has been addressed in commit `3ba4b665b` which has been included in dockerspawner release version 13. Users are advised to upgrade. Users unable to upgrade should explicitly set `DockerSpawner.allowed_images` to a non-empty list containing only the default image will result in the intended default behavior.

Severity

8 (High)


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

CWE

CWE-20 - Improper Input Validation

Assigner

GitHub_M

References

2 references

URL	Tags
https://github.com/jupyterhub/dockerspawner/secur…	x_refsource_CONFIRM
https://github.com/jupyterhub/dockerspawner/commi…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
jupyterhub	dockerspawner	Affected: >= 0.11.0, < 13.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T21:23:39.501Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://github.com/jupyterhub/dockerspawner/security/advisories/GHSA-hfgr-h3vc-p6c2",
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/jupyterhub/dockerspawner/security/advisories/GHSA-hfgr-h3vc-p6c2"
          },
          {
            "name": "https://github.com/jupyterhub/dockerspawner/commit/3ba4b665b6ca6027ea7a032d7ca3eab977574626",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/jupyterhub/dockerspawner/commit/3ba4b665b6ca6027ea7a032d7ca3eab977574626"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "dockerspawner",
          "vendor": "jupyterhub",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 0.11.0, \u003c 13.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "dockerspawner is a tool to spawn JupyterHub single user servers in Docker containers. Users of JupyterHub deployments running DockerSpawner starting with 0.11.0 without specifying `DockerSpawner.allowed_images` configuration allow users to launch _any_ pullable docker image, instead of restricting to only the single configured image, as intended. This issue has been addressed in commit `3ba4b665b` which has been included in dockerspawner release version 13. Users are advised to upgrade. Users unable to upgrade should explicitly set `DockerSpawner.allowed_images` to a non-empty list containing only the default image will result in the intended default behavior."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20: Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-12-08T20:08:31.736Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/jupyterhub/dockerspawner/security/advisories/GHSA-hfgr-h3vc-p6c2",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/jupyterhub/dockerspawner/security/advisories/GHSA-hfgr-h3vc-p6c2"
        },
        {
          "name": "https://github.com/jupyterhub/dockerspawner/commit/3ba4b665b6ca6027ea7a032d7ca3eab977574626",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/jupyterhub/dockerspawner/commit/3ba4b665b6ca6027ea7a032d7ca3eab977574626"
        }
      ],
      "source": {
        "advisory": "GHSA-hfgr-h3vc-p6c2",
        "discovery": "UNKNOWN"
      },
      "title": "Any image allowed by default"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2023-48311",
    "datePublished": "2023-12-08T20:08:31.736Z",
    "dateReserved": "2023-11-14T17:41:15.573Z",
    "dateUpdated": "2024-08-02T21:23:39.501Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

GHSA-HFGR-H3VC-P6C2

Vulnerability from github – Published: 2023-12-08 14:42 – Updated: 2023-12-13 21:34

Summary

DockerSpawner allows any image by default

Details

Impact

Patches

Upgrade to DockerSpawner 13.

Workarounds

Explicitly setting DockerSpawner.allowed_images to a non-empty list containing only the default image will result in the intended default behavior:

c.DockerSpawner.image = "your-image"
c.DockerSpawner.allowed_images = ["your-image"]

Severity

4.3 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "dockerspawner"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.11.0"
            },
            {
              "fixed": "13.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-48311"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-12-08T14:42:55Z",
    "nvd_published_at": "2023-12-08T20:15:07Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\n\nUsers of JupyterHub deployments running DockerSpawner starting with 0.11.0 without specifying `DockerSpawner.allowed_images` configuration allow users to launch _any_ pullable image, instead of restricting to only the single configured image, as intended.\n\n### Patches\n\nUpgrade to DockerSpawner 13.\n\n### Workarounds\n\nExplicitly setting `DockerSpawner.allowed_images` to a non-empty list containing only the default image will result in the intended default behavior:\n\n```python\nc.DockerSpawner.image = \"your-image\"\nc.DockerSpawner.allowed_images = [\"your-image\"]\n```\n",
  "id": "GHSA-hfgr-h3vc-p6c2",
  "modified": "2023-12-13T21:34:38Z",
  "published": "2023-12-08T14:42:55Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/jupyterhub/dockerspawner/security/advisories/GHSA-hfgr-h3vc-p6c2"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-48311"
    },
    {
      "type": "WEB",
      "url": "https://github.com/jupyterhub/dockerspawner/commit/3ba4b665b6ca6027ea7a032d7ca3eab977574626"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/jupyterhub/dockerspawner"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "DockerSpawner allows any image by default"
}

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.

Action not permitted

PYSEC-2026-1312

Impact

Patches

Workarounds

CVE-2023-48311 (GCVE-0-2023-48311)

GHSA-HFGR-H3VC-P6C2

Impact

Patches

Workarounds

Tags

Sightings

Nomenclature