JupyterLab: Argument injection in JupyterLab extension uninstall exposes server-readable files and internal URLs
Summary
| CVE | CVE-2026-102904 |
|---|---|
| State | PUBLISHED |
| Assigner | GitHub_M |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-09-29 21:17:18 UTC |
| Updated | 2026-09-29 21:40:15 UTC |
| Description | JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From JupyterLab 4.0.0 until 4.5.11 and 4.6.4, the PyPI Extension Manager uninstall request reaches ExtensionHandler.post, which validates extension names for installation but passes uninstall names to PyPIExtensionManager.uninstall and python -m pip uninstall without rejecting option-like values. The security impact requires that the PyPI Extension Manager is enabled, the account can call the extension API, and kernels and terminals are disabled or delegated to remote hosts; otherwise the user can already read files and make outbound requests directly. An authenticated user with extension API access can supply a pip requirements option to make the server read a local file or fetch an internal URL, and reflected parse errors can return the first unparsable line or response content. A pip log option can also create or corrupt a chosen path with pip-generated log text, but the requester cannot select an arbitrary disclosed line or arbitrary file content, and the injection does not add code execution or availability impact beyond ordinary package removal. This issue is fixed in JupyterLab 4.5.11 and 4.6.4. |
Risk And Classification
Primary CVSS: v3.1 5.4 MEDIUM from [email protected]
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Problem Types: CWE-88 | CWE-209 | CWE-918 | CWE-88 CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') | CWE-209 CWE-209: Generation of Error Message Containing Sensitive Information | CWE-918 CWE-918: Server-Side Request Forgery (SSRF)
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 5.4 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |
| 3.1 | CNA | DECLARED | 5.4 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
LowIntegrity
LowAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Jupyterlab | Jupyterlab | affected >= 4.0.0, < 4.5.11 | Not specified |
| CNA | Jupyterlab | Jupyterlab | affected >= 4.6.0, < 4.6.4 | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| github.com/jupyterlab/jupyterlab/commit/e277bc958e737130ac47b6c5078d08b2... | [email protected] | github.com | |
| github.com/jupyterlab/jupyterlab/releases/tag/v4.5.11 | [email protected] | github.com | |
| github.com/jupyterlab/jupyterlab/security/advisories/GHSA-3325-v43h-43rv | [email protected] | github.com | |
| github.com/jupyterlab/jupyterlab/releases/tag/v4.6.4 | [email protected] | github.com | |
| github.com/jupyterlab/jupyterlab/commit/a274a8276b9185d03efd4c3c20713d31... | [email protected] | github.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.