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Fencer Intel
medium 6.1

CVE-2019-10255 json

Open Redirect vulnerability in jupyterhub and notebook

published 7y ago modified 3mo ago also GHSA-rv62-4pmj-xw6h , PYSEC-2026-2683 , PYSEC-2026-647 , EUVD-2019-0436

cvss
6.1
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.8%
EPSS 1.8% chance of exploitation in 30 days, percentile 78%
public exploits
0
none known

Summary

An Open Redirect vulnerability for all browsers in Jupyter Notebook before 5.7.7 and some browsers (Chrome, Firefox) in JupyterHub before 0.9.5 allows crafted links to the login page, which will redirect to a malicious site after successful login. Servers running on a base_url prefix are not affected.

Patch / fix

  • pypi notebook 5.7.8
  • pypi jupyterhub 0.9.6
  • jupyter jupyterhub 0.9.5
  • jupyter notebook 5.7.7
  • jupyter-notebook Debian 14, Debian 13, Debian 12 5.7.8-1

debian advisories DEBIAN-CVE-2019-10255

  • jupyter-notebook Ubuntu 18.04 LTS 5.2.2-1ubuntu0.1

ubuntu advisories UBUNTU-CVE-2019-10255

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

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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-2019-10255 updated cvss 7.4

python-notebook: Open redirect vulnerability in the login page

  • 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

1.76% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-09).

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
OSV 3.0 6.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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
pypi jupyterhub
<0.9.6
0.9.6

Classification

Weakness
  • CWE-601 URL Redirection to Untrusted Site

References

Sources

Fencer Intel 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.