Skip to content
Fencer Vulns
medium 6.1

CVE-2019-10856 json

Jupyter Notebook open redirect vulnerability

published 2019-04-04 7 y ago modified 2026-06-17 4 mo ago also GHSA-rcx2-m7jp-p9wj , PYSEC-2019-158 , EUVD-2019-0094

cvss
6.1
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.3%
EPSS 1.3% chance of exploitation in 30 days, percentile 69%
public exploits
0
none known

Summary

In Jupyter Notebook before 5.7.8, an open redirect can occur via an empty netloc. This issue exists because of an incomplete fix for CVE-2019-10255.

Patch / fix

  • pypi notebook 5.7.8
  • jupyter notebook 5.7.8
  • jupyter-notebook Ubuntu 18.04 LTS 5.2.2-1ubuntu0.1
  • jupyter-notebook Ubuntu 20.04 LTS 6.0.3-2ubuntu0.1
  • jupyter-notebook Ubuntu 22.04 LTS 6.4.8-1ubuntu0.1

ubuntu advisories UBUNTU-CVE-2019-10856

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-10856 updated cvss 7.4

python-notebook: open redirect vulnerability by an empty netloc

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.26% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • blog.jupyter.org https://blog.jupyter.org/open-redirect-vulnerability-in-jupyter-jupyterhub-adf43583f1e4 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 6.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 5.8 AV:N/AC:M/Au:N/C:P/I:P/A:N
GitHub 3.0 6.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
pypi notebook
<5.7.8
5.7.8

Classification

Weakness
  • CWE-601 URL Redirection to Untrusted Site

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.