CVE-2023-48311

Any image allowed by default

MEDIUM
4.3
CVSS Score
Published: December 8, 2023 at 08:08 PM UTC
Updated: June 17, 2026 at 06:33 AM UTC
2 products affected across 2 vendorsDockerspawnerDockerspawner

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.6%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0.11.0 ≤ v < 13.0
Affected range stops below 13.0, so it looks safe — our inference, not a vendor statement
v < 13.0
Affected range stops below 13.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20NVD-CWE-noinfo

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