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.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Jupyter
  • Jupyterlab

No data.

No data.

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Vendors Products
References
Link Providers
https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-h5v5-8746-g7mm cve-icon cve-icon
https://www.vulncheck.com/advisories/jupyterlab-plugin-manager-lock-rule-enforcement-bypass cve-icon cve-icon
History

Thu, 13 Aug 2026 11:45:00 +0000

Type Values Removed Values Added
Description 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.
Title JupyterLab 4.6.0 Plugin Manager Lock-Rule Enforcement Bypass
First Time appeared Jupyter
Jupyter jupyterlab
Weaknesses CWE-602
CPEs cpe:2.3:a:jupyter:jupyterlab:4.1.0:*:*:*:*:*:*:*
cpe:2.3:a:jupyter:jupyterlab:4.5.0:-:*:*:*:*:*:*
cpe:2.3:a:jupyter:jupyterlab:4.5.0:rc0:*:*:*:*:*:*
cpe:2.3:a:jupyter:jupyterlab:4.5.0:rc1:*:*:*:*:*:*
cpe:2.3:a:jupyter:jupyterlab:4.5.1:*:*:*:*:*:*:*
cpe:2.3:a:jupyter:jupyterlab:4.5.2:*:*:*:*:*:*:*
cpe:2.3:a:jupyter:jupyterlab:4.5.3:*:*:*:*:*:*:*
cpe:2.3:a:jupyter:jupyterlab:4.5.4:*:*:*:*:*:*:*
cpe:2.3:a:jupyter:jupyterlab:4.5.5:*:*:*:*:*:*:*
cpe:2.3:a:jupyter:jupyterlab:4.5.6:*:*:*:*:*:*:*
cpe:2.3:a:jupyter:jupyterlab:4.5.7:*:*:*:*:*:*:*
cpe:2.3:a:jupyter:jupyterlab:4.6.0:alpha0:*:*:*:*:*:*
cpe:2.3:a:jupyter:jupyterlab:4.6.0:alpha1:*:*:*:*:*:*
cpe:2.3:a:jupyter:jupyterlab:4.6.0:alpha2:*:*:*:*:*:*
cpe:2.3:a:jupyter:jupyterlab:4.6.0:alpha3:*:*:*:*:*:*
cpe:2.3:a:jupyter:jupyterlab:4.6.0:alpha4:*:*:*:*:*:*
cpe:2.3:a:jupyter:jupyterlab:4.6.0:alpha5:*:*:*:*:*:*
Vendors & Products Jupyter
Jupyter jupyterlab
References
Metrics cvssV4_0

{'score': 6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-08-13T11:28:26.249Z

Reserved: 2026-08-13T11:17:25.160Z

Link: CVE-2026-73627

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-13T12:17:28.043

Modified: 2026-08-13T12:17:28.043

Link: CVE-2026-73627

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-13T13:30:17Z