8

CVE-2023-48311: jupyter dockerspawner Improper Input Validation

CVSS: 8.0v3.1HighModified
AliasesGHSA-hfgr-h3vc-p6c2PYSEC-2026-1312
Published 08-12-2023Last modified 02-08-2024
Open JSON

Vulnerability summary

CVE-2023-48311 is a high (CVSS 8.0) Improper Input Validation vulnerability in jupyter dockerspawner. EPSS estimates a 0.64% chance of exploitation in the next 30 days, higher than 49.8% of scored vulnerabilities.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.0/10
010
High · v3.1 (CVE.org)
EPSS score
0.64%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 08-12-2023
    PublishedVulnerability first disclosed.
  2. 02-08-2024
    Last modifiedVulnerability information updated.

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 metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.64%

Chance of exploitation in the next 30 days

Percentile

50%

Versus all other CVEs

30-day change

0.00 pp

From 0.64% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.64%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Jupyter1 product
Jupyterhub1 product
PyPI1 product
  • dockerspawner≥ 0.11.0, < 13.0.0

3 vendors · 3 products

References

6 links