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JupyterLab 4.6.0 Plugin Manager Lock-Rule Enforcement Bypass

Type: advisorySource: Official CVE ListRisk context updated1 source record

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.

Announced Source revision 2
Original source ↗
CVE context updated. The publisher announcement is unchanged.

CVE-2026-73627

Primary source · Revision 2

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-73627

jupyterlab

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

jupyterlab

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "vendor": "jupyterlab",
    "product": "jupyterlab",
    "versions": [
      {
        "status": "affected",
        "version": "4.6.0",
        "versionType": "semver",
        "lessThanOrEqual": "4.6.1"
      }
    ],
    "packageURL": "pkg:pypi/jupyterlab",
    "defaultStatus": "unaffected"
  },
  {
    "vendor": "jupyterlab",
    "product": "jupyterlab",
    "versions": [
      {
        "status": "affected",
        "version": "4.1.0",
        "versionType": "semver",
        "lessThanOrEqual": "4.5.9"
      }
    ],
    "packageURL": "pkg:pypi/jupyterlab",
    "defaultStatus": "unaffected"
  }
]
Related CVEs
CVE-2026-73627

Source reference: /cveMetadata/cveId

Publisher severity

medium

Source reference: /containers/cna/metrics

Linked CVE context

These ratings describe the referenced vulnerabilities and products. They are not a severity rating for every application using this dependency.

CVE-2026-73627 · Medium

jupyterlab

Event
#58677 · Revision 2
Added to Heist Feed
Publisher date
Read the original announcement