BIT-jupyterlab-2026-73626
See a problem?- Import Source
- https://github.com/bitnami/vulndb/tree/main/data/jupyterlab/BIT-jupyterlab-2026-73626.json
- JSON Data
- https://api.osv.dev/v1/vulns/BIT-jupyterlab-2026-73626
- Aliases
- Published
- 2026-09-25T12:23:14Z
- Modified
- 2026-09-25T14:25:48Z
- Summary
- JupyterLab before 4.6.2 Authentication Bypass via PyPIExtensionManager
- Details
-
JupyterLab versions >=4.6.0,<=4.6.1 and <=4.5.9 contain an allowlist/blocklist enforcement gap in PyPIExtensionManager.install(). A missing 'await' caused the is_install_allowed coroutine to never execute, so the extension allowlist/blocklist check was not enforced for direct callers of install(). The stock JupyterLab HTTP API and Extension Manager UI are not affected, as they perform a separate, correctly awaited check. The issue affects only deployments where a custom extension or downstream integration imports PyPIExtensionManager and calls install() directly with a package name influenced by untrusted input, an allowlist/blocklist is configured, the PyPI Extension Manager is enabled, and kernels and terminals are disabled or delegated to remote hosts. Fixed in JupyterLab 4.6.2 and 4.5.10.
- Database specific
{ "cpes": [ "cpe:2.3:a:jupyter:jupyterlab:*:*:*:*:*:python:*:*" ], "severity": "High" }- References
Affected packages
Bitnami / jupyterlab
Package
- Name
- jupyterlab
- Purl
- pkg:bitnami/jupyterlab
Severity
- 7.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator