{"cve":"CVE-2023-48311","nvd":{"published":"2023-12-08T20:15:07.573","modified":"2026-06-17T06:33:59.013","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","score":4.3},"cwes":["CWE-20"],"references":["https://github.com/jupyterhub/dockerspawner/commit/3ba4b665b6ca6027ea7a032d7ca3eab977574626","https://github.com/jupyterhub/dockerspawner/security/advisories/GHSA-hfgr-h3vc-p6c2","https://github.com/jupyterhub/dockerspawner/commit/3ba4b665b6ca6027ea7a032d7ca3eab977574626","https://github.com/jupyterhub/dockerspawner/security/advisories/GHSA-hfgr-h3vc-p6c2"],"products":["jupyter:dockerspawner"],"source":"nvd","synced_at":"2026-10-19T21:42:34.585441961+00:00"},"epss":{"cve":"CVE-2023-48311","score":0.00638,"percentile":0.50607,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-hfgr-h3vc-p6c2","url":"https://osv.dev/vulnerability/GHSA-hfgr-h3vc-p6c2","summary":"DockerSpawner allows any image by default","modified":"2026-07-07T17:56:53.774103403Z","packages":[{"ecosystem":"PyPI","name":"dockerspawner","purl":"pkg:pypi/dockerspawner","ranges":[">=0.11.0 <13.0.0"],"fixed":["13.0.0"]}]},{"id":"PYSEC-2026-1312","url":"https://osv.dev/vulnerability/PYSEC-2026-1312","summary":"DockerSpawner allows any image by default","modified":"2026-07-07T17:46:38.918152675Z","packages":[{"ecosystem":"PyPI","name":"dockerspawner","purl":"pkg:pypi/dockerspawner","ranges":[">=0.11.0 <13.0.0"],"fixed":["13.0.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}