# CVE-2026-73627

## Summary

- **CVE ID:** CVE-2026-73627
- **Severity:** MEDIUM
- **CVSS Score:** 6 (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)
- **CWE:** CWE-602
- **Published:** Aug 13, 2026
- **Last Modified:** Aug 15, 2026

## 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.

## Affected Products

- jupyterlab — jupyterlab (0)

## References

- [CNA](https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-h5v5-8746-g7mm)
- [CNA](https://www.vulncheck.com/advisories/jupyterlab-plugin-manager-lock-rule-enforcement-bypass)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.25%
- **EPSS Percentile:** 16.2

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._