CVE-2023-48311

MediumCVSS 4.3/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 4.3/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Weakness enumeration

CWE-20

Affected software

Vendor	Product	Versions
jupyterhub	dockerspawner	>= 0.11.0, < 13.0

References

Timeline

Published: Dec 8, 2023
Last modified: Jun 17, 2026
NVD status: Modified

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