---
id: CVE-2026-73417
title: >-
  jupyterlab is an extensible environment for interactive and reproducible
  computing, based on the Jupyter Notebook Architecture
summary: >-
  jupyterlab is an extensible environment for interactive and reproducible
  computing, based on the Jupyter Notebook Architecture. From 3.3.0 until 4.5.10
  and 4.6.2, JupyterLab allows notebook settings to be shared and applied
  through an ov…
severity: high
cvss: 8.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L'
cwe:
  - CWE-79
  - CWE-116
vendor: jupyterlab
product: jupyterlab
affected:
  - 'jupyterlab >= 4.6.0, < 4.6.2'
  - 'jupyterlab >= 3.3.0, < 4.5.10'
patched:
  - jupyterlab 4.6.2
  - jupyterlab 4.5.10
published: '2026-08-13'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T20:05:53.723'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73417'
references:
  - url: >-
      https://github.com/jupyterlab/jupyterlab/commit/9365f020baec5221deaf11535ed554c06637c999
    label: security-advisories@github.com
  - url: >-
      https://github.com/jupyterlab/jupyterlab/commit/be9303f5bcd5308eaeae953c5a3c903046682c2c
    label: security-advisories@github.com
  - url: >-
      https://github.com/jupyterlab/jupyterlab/commit/f1beab4a2027af4719d6edc07d52d6cf5a39a432
    label: security-advisories@github.com
  - url: 'https://github.com/jupyterlab/jupyterlab/pull/19184'
    label: security-advisories@github.com
  - url: 'https://github.com/jupyterlab/jupyterlab/pull/19185'
    label: security-advisories@github.com
  - url: 'https://github.com/jupyterlab/jupyterlab/pull/19186'
    label: security-advisories@github.com
  - url: 'https://github.com/jupyterlab/jupyterlab/releases/tag/v4.5.10'
    label: security-advisories@github.com
  - url: 'https://github.com/jupyterlab/jupyterlab/releases/tag/v4.6.2'
    label: security-advisories@github.com
  - url: 'https://github.com/jupyterlab/jupyterlab/releases/tag/v4.7.0a1'
    label: security-advisories@github.com
  - url: >-
      https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-pppj-hq3g-57pj
    label: security-advisories@github.com
  - url: 'https://github.com/jupyterlab/jupyterlab'
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-73417.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-73417'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2515831'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-73417'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73417'
  - url: 'https://access.redhat.com/errata/RHSA-2026:65126'
tags:
  - nvd
  - osv
  - pip
  - csaf
  - vex
  - red-hat
epss: 0.00748
epssPercentile: 0.52928
aliases:
  - GHSA-pppj-hq3g-57pj
  - BIT-jupyterlab-2026-73417
  - PYSEC-2026-3672
ecosystem: pip
cvssSource: vendor
ingestedAt: '2026-08-13T19:18:20.768Z'
---

## Overview

jupyterlab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From 3.3.0 until 4.5.10 and 4.6.2, JupyterLab allows notebook settings to be shared and applied through an overrides.json file using the Import button in the Settings Editor. In packages/notebook-extension/schema/tracker.json and packages/notebook-extension/src/index.ts, the sideBySideLeftMarginOverride and sideBySideRightMarginOverride settings are not properly validated before being inserted into style content, allowing a crafted settings file to contain instructions that execute as code instead of only changing display preferences. A user can import the malicious file, or an attacker with access to a shared settings location can plant an overrides.json that is applied automatically. The embedded code runs with the affected user's access and can read or modify notebooks and files and run code through the notebook server, including on a connected kernel. This issue is fixed in versions 4.5.10 and 4.6.2.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-73417)

Affected packages:

- `jupyterlab >= 4.6.0, < 4.6.2`
- `jupyterlab >= 3.3.0, < 4.5.10`

Patched in:

- `jupyterlab 4.6.2`
- `jupyterlab 4.5.10`

Source: https://osv.dev/vulnerability/GHSA-pppj-hq3g-57pj

## Vendor advisories

- **RHSA-2026:65126** · Red Hat · fixed in: Red Hat OpenShift AI 2.25 · released 2026-09-08 · [advisory](https://access.redhat.com/errata/RHSA-2026:65126)
- **Red Hat VEX** · Important · affected: Red Hat OpenShift AI (RHOAI) · no fix planned: Red Hat OpenShift AI (RHOAI) · updated 2026-09-25 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-73417.json)