Answer in brief
CVE-2026-73627 records a Medium severity (CVSS 6.0) vulnerability in JupyterLab 4.6.0 Plugin Manager Lock-Rule Enforcement Bypass. The current sources do not mark it as known exploited. The current feed maps jupyterlab/jupyterlab (generic), jupyterlab/jupyterlab (generic), jupyterlab (pypi), jupyterlab (pypi). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.0. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps jupyterlab/jupyterlab (generic), jupyterlab/jupyterlab (generic), jupyterlab (pypi), jupyterlab (pypi). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| jupyterlab/jupyterlabgeneric | >=4.6.0 <=4.6.1 | Not reported |
| jupyterlab/jupyterlabgeneric | >=4.1.0 <=4.5.9 | Not reported |
| jupyterlabpypi | >=4.6.0 <4.6.2 | 4.6.2 |
| jupyterlabpypi | >=4.1.0 <4.5.10 | 4.5.10 |
Published upstream
Aug 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 1, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 8, 2026
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.
Quoted source text, attributed separately from HOL analysis.