---
id: CVE-2026-73627
title: >-
  JupyterLab (pip package 'jupyterlab') versions >=4.1.0,<=4.5.9 and
  >=4.6.0,<=4.6.1 contain a plugin manager lock-rule enforcement bypass
summary: >-
  JupyterLab (pip package 'jupyterlab') versions >=4.1.0,<=4.5.9 and
  >=4.6.0,<=4.6.1 contain a plugin manager lock-rule enforcement bypass. Two
  server-side enforcement gaps allow an authenticated user to circumvent
  administrator lock rules…
severity: high
cwe:
  - CWE-602
  - CWE-414
published: '2026-08-13'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T20:36:38.867'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73627'
references:
  - url: >-
      https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-h5v5-8746-g7mm
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/jupyterlab-plugin-manager-lock-rule-enforcement-bypass
    label: disclosure@vulncheck.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-73627.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-73627'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2515245'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-73627'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73627'
  - url: 'https://access.redhat.com/errata/RHSA-2026:65126'
tags:
  - nvd
  - csaf
  - vex
  - red-hat
epss: 0.00422
epssPercentile: 0.33755
ingestedAt: '2026-09-09T21:22:45.533Z'
vendor: Red Hat
product: Red Hat OpenShift AI 2.25
affected:
  - migration_toolkit_for_applications 8
  - openshift_ai_rhoai
  - openshift_ai 2.25
patched:
  - openshift_ai 2.25
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N'
cvssSource: vendor
---

## Overview

JupyterLab (pip package 'jupyterlab') versions >=4.1.0,<=4.5.9 and >=4.6.0,<=4.6.1 contain a plugin manager lock-rule enforcement bypass. Two server-side enforcement gaps allow an authenticated user to circumvent administrator lock rules by making direct requests to the /lab/api/plugins endpoint, enabling or disabling plugins that were locked — including child plugins of multi-plugin extensions and plugins locked via the 'lock all' mechanism. This can impact data integrity and bypass hardening or restrictions (e.g., download/upload limits) implemented through locked plugins. Fixed in versions 4.6.2 and 4.5.10.

## Remediation

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

## 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** · Moderate · affected: Migration Toolkit for Applications 8, Red Hat OpenShift AI (RHOAI) · no fix planned: Migration Toolkit for Applications 8, Red Hat OpenShift AI (RHOAI) · updated 2026-09-15 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-73627.json)