GHSA-gj55-2xf9-67rq: Jupyterlite core HTML Injection Vulnerability

MODERATE
CVSS 8.1
CWE-79
Published
Advisory Summary

GHSA-gj55-2xf9-67rq is a MODERATE (CVSS 8.1) html injection vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Jupyterlite core libraries in the PyPI ecosystem. The issue involves html injection in jupyterlite leading to dom clobbering. Remediation is available by upgrading affected packages to version 0.4.1.

GHSA-gj55-2xf9-67rq at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-gj55-2xf9-67rq
Severity MODERATE
CVSS v3.1 Base Score 8.1
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Jupyterlite core
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 8.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N).

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

How to Fix GHSA-gj55-2xf9-67rq

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

jupyterlite-core fixed: 0.4.1
pip install jupyterlite-core>=0.4.1
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 jupyterlite-core

How to Check if You Are Affected

To determine whether your Python environment is affected by GHSA-gj55-2xf9-67rq, inspect your installed packages using pip:

pip show jupyterlite-core

Analyze the terminal output to locate any version of Jupyterlite core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.4.1), your application is affected.

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

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Jupyterlite core, 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

### Impact The vulnerability depends on user interaction by opening a malicious notebook with Markdown cells, or Markdown file using JupyterLab preview feature. A malicious user can access any data accessible from JupyterLite and perform arbitrary actions in JupyterLite environment. ### Patches JupyterLite 0.4.1 was patched. ### Workarounds There is no workaround for the underlying DOM Clobbering susceptibility. However, select plugins can be disabled on deployments which cannot update in a timely fashion to minimise the risk. These are: - `@jupyterlab/mathjax-extension:plugin` - users will loose ability to preview mathematical equations - `@jupyterlab/markdownviewer-extension:plugin` - users will loose ability to open Markdown previews - `@jupyterlab/mathjax2-extension:plugin` (if installed with optional `jupyterlab-mathjax2` package) - an older version of the mathjax plugin for JupyterLab 4.x To disable these extensions populate the `disabledExtensions` key in `jupyter-config-data` stanza of `jupyter-lite.json` as documented on https://jupyterlite.readthedocs.io/en/stable/howto/configure/config_files.html#jupyter-lite-json ```json { "jupyter-lite-schema-version": 0, "jupyter-config-data": { "appName": "My JupyterLite App", "disabledExtensions": [ "@jupyterlab/markdownviewer-extension:plugin", "@jupyterlab/mathjax-extension:plugin", "@jupyterlab/mathjax2-extension:plugin" ] } } ``` To confirm that the plugins were disabled manual inspection of the built page is required. ### References Upstream advisory: https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-9q39-rmj3-p4r2 ### Notes This change has a potential to break rendering of some markdown. There is a setting in Sanitizer which allows to revert to the previous sanitizer settings (`allowNamedProperties`).

GHSA-gj55-2xf9-67rq Affected Jupyterlite core Versions

1 component(s)
Fixed Versions:
0.4.1
Product / Package Ecosystem Affected Versions Fixed Version
jupyterlite-core
PyPI
< 0.4.1
0.4.1

References

Frequently Asked Questions

What is GHSA-gj55-2xf9-67rq?
GHSA-gj55-2xf9-67rq is a security vulnerability in Jupyterlite core involving HTML injection in JupyterLite leading to DOM Clobbering under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Jupyterlite core versions are affected?
Affected versions include releases prior to 0.4.1 across affected packages: jupyterlite-core.
What version fixes GHSA-gj55-2xf9-67rq?
Upgrading to 0.4.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is jupyterlite-core affected?
Yes, jupyterlite-core is affected in releases prior to 0.4.1. Upgrade your dependency to 0.4.1 or later.
What is the CVSS score of GHSA-gj55-2xf9-67rq?
GHSA-gj55-2xf9-67rq has a CVSS v3.1 base score of 8.1 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.
What CWE is associated with GHSA-gj55-2xf9-67rq?
GHSA-gj55-2xf9-67rq is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check PyPI dependencies for GHSA-gj55-2xf9-67rq?
Run the dependency tree command: 'pip show jupyterlite-core'. 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
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-gj55-2xf9-67rq",
  "modified" : "2024-11-18T16:27:10Z",
  "published" : "2024-09-06T19:51:19Z",
  "aliases" : [ ],
  "summary" : "HTML injection in JupyterLite leading to DOM Clobbering",
  "details" : "### Impact\n\nThe vulnerability depends on user interaction by opening a malicious notebook with Markdown cells, or Markdown file using JupyterLab preview feature.\n\nA malicious user can access any data accessible from JupyterLite and perform arbitrary actions in JupyterLite environment.\n\n### Patches\n\nJupyterLite 0.4.1 was patched.\n\n### Workarounds\n\nThere is no workaround for the underlying DOM Clobbering susceptibility. However, select plugins can be disabled on deployments which cannot update in a timely fashion to minimise the risk. These are:\n- `@jupyterlab/mathjax-extension:plugin` - users will loose ability to preview mathematical equations \n- `@jupyterlab/markdownviewer-extension:plugin` - users will loose ability to open Markdown previews\n- `@jupyterlab/mathjax2-extension:plugin` (if installed with optional `jupyterlab-mathjax2` package) - an older version of the mathjax plugin for JupyterLab 4.x\n\nTo disable these extensions populate the `disabledExtensions` key in `jupyter-config-data` stanza of `jupyter-lite.json` as documented on https://jupyterlite.readthedocs.io/en/stable/howto/configure/config_files.html#jupyter-lite-json\n\n```json\n{\n  \"jupyter-lite-schema-version\": 0,\n  \"jupyter-config-data\": {\n    \"appName\": \"My JupyterLite App\",\n    \"disabledExtensions\": [\n      \"@jupyterlab/markdownviewer-extension:plugin\",\n      \"@jupyterlab/mathjax-extension:plugin\",\n      \"@jupyterlab/mathjax2-extension:plugin\"\n    ]\n  }\n}\n```\n\nTo confirm that the plugins were disabled manual inspection of the built page is required.\n\n### References\n\nUpstream advisory: https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-9q39-rmj3-p4r2\n\n### Notes\n\nThis change has a potential to break rendering of some markdown. There is a setting in Sanitizer which allows to revert to the previous sanitizer settings (`allowNamedProperties`).",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "jupyterlite-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.4.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-9q39-rmj3-p4r2"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jupyterlite/jupyterlite/security/advisories/GHSA-gj55-2xf9-67rq"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jupyterlite/jupyterlite"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-09-06T19:51:19Z",
    "nvd_published_at" : null
  }
}