cve.bz

CVE-2023-48311

4.3 mediumEPSS 0.6%

Medium (4.3) in jupyter dockerspawner. EPSS 0.6% chance of exploitation in the next 30 days. Fixed in dockerspawner 13.0.0.

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

CVSS 3.1

4.3 medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS
0.6% chance of exploitation in the next 30 days; higher than 50% of CVEs (scores of 2026-10-31)
CWE
CWE-20
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-hfgr-h3vc-p6c2PyPIdockerspawner>=0.11.0 <13.0.013.0.0
PYSEC-2026-1312PyPIdockerspawner>=0.11.0 <13.0.013.0.0

References

Check your stackJSON