CVE-2019-10856: Notebook Jupyter Notebook Open Redirect Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-rcx2-m7jp-p9wj
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CVSS 6.1
CWE-601
Published
Advisory Summary

CVE-2019-10856 is a MODERATE (CVSS 6.1) jupyter notebook open redirect vulnerability vulnerability (CWE-601: URL Redirection to Untrusted Site ('Open Redirect')) affecting Notebook libraries in the PyPI ecosystem. The issue involves jupyter notebook open redirect vulnerability. Remediation is available by upgrading affected packages to version 5.7.8.

CVE-2019-10856 at a Glance

CVE Identifier CVE-2019-10856
GHSA Identifier GHSA-rcx2-m7jp-p9wj
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-601: URL Redirection to Untrusted Site ('Open Redirect')
Affected Product Notebook
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 6.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Changed (S:C)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2019-10856

To remediate this vulnerability, upgrade all affected Notebook dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

notebook fixed: 5.7.8 
pip install notebook>=5.7.8
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show notebook

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2019-10856, inspect your installed packages using pip:

pip show notebook

Analyze the terminal output to locate any version of Notebook in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 5.7.8), your application is affected.

Note: The pip show notebook command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-601: URL Redirection to Untrusted Site ('Open Redirect'), where the web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect. In Notebook, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2019-10856 Affected Notebook Versions

1 component(s)
Fixed Versions:
5.7.8
Product / Package Ecosystem Affected Versions Fixed Version
notebook
pypi/notebook
PyPI
< 5.7.8
5.7.8

References

NVD — CVE-2019-10856 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-10856
Security Fix Commit FIX COMMIT
https://github.com/jupyter/notebook/commit/979e0bd15e794ceb00cc63737fcd5fd9addc4a99
blog.jupyter.org/open-redirect-vulne... WEB
https://blog.jupyter.org/open-redirect-vulnerability-in-jupyter-jupyterhub-adf43583f1e4
Notebook Source Repository REPOSITORY
https://github.com/jupyter/notebook
Notebook Source Repository REPOSITORY
https://github.com/jupyter/notebook/compare/16cf97c...b8e30ea
Notebook Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/notebook/PYSEC-2019-158.yaml

Frequently Asked Questions

What is CVE-2019-10856?
CVE-2019-10856 is a security vulnerability in Notebook involving Jupyter Notebook open redirect vulnerability under CWE-601: URL Redirection to Untrusted Site ('Open Redirect').
Which Notebook versions are affected?
Affected versions include releases prior to 5.7.8 across affected packages: notebook.
What version fixes CVE-2019-10856?
Upgrading to 5.7.8 (or the latest patched release for your respective branch) resolves the vulnerability.
Is notebook affected?
Yes, notebook is affected in releases prior to 5.7.8. Upgrade your dependency to 5.7.8 or later.
What is the CVSS score of CVE-2019-10856?
CVE-2019-10856 has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2019-10856?
CVE-2019-10856 is classified under CWE-601: URL Redirection to Untrusted Site ('Open Redirect') (The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.).
How can I check PyPI dependencies for CVE-2019-10856?
Run the dependency tree command: 'pip show notebook'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-rcx2-m7jp-p9wj",
  "modified" : "2024-09-26T14:16:05Z",
  "published" : "2019-04-09T19:47:27Z",
  "aliases" : [ "CVE-2019-10856" ],
  "summary" : "Jupyter Notebook open redirect vulnerability",
  "details" : "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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "notebook"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "5.7.8"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-10856"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jupyter/notebook/commit/979e0bd15e794ceb00cc63737fcd5fd9addc4a99"
  }, {
    "type" : "WEB",
    "url" : "https://blog.jupyter.org/open-redirect-vulnerability-in-jupyter-jupyterhub-adf43583f1e4"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jupyter/notebook"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jupyter/notebook/compare/16cf97c...b8e30ea"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/notebook/PYSEC-2019-158.yaml"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-601" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-06-16T21:54:28Z",
    "nvd_published_at" : null
  }
}