JupyterLab: Argument injection in JupyterLab extension uninstall exposes server-readable files and internal URLs
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure, Code execution
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Partial Red Hat: 2 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-209 and CWE-88.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| jupyterlab | jupyterlab | 4.0.0 to before 4.5.11; 4.6.0 to before 4.6.4 | 4.5.11, 4.6.4 | Patch available | CNA |
| — | jupyterlab (PyPI) | 4.6.0 to before 4.6.4 | 4.6.4 | Patch available | GHSA-3325-v43h-43rv |
| — | jupyterlab (PyPI) | 4.0.0 to before 4.5.11 | 4.5.11 | Patch available | GHSA-3325-v43h-43rv |
- jupyterlab Vendorjupyterlab Affected 4.0.0 to before 4.5.11; 4.6.0 to before 4.6.4 Fixed in 4.5.11, 4.6.4 Patch available CNA
- jupyterlab (PyPI) Vendor— Affected 4.6.0 to before 4.6.4 Fixed in 4.6.4 Patch available GHSA-3325-v43h-43rv
- jupyterlab (PyPI) Vendor— Affected 4.0.0 to before 4.5.11 Fixed in 4.5.11 Patch available GHSA-3325-v43h-43rv
CPE names Threatist (inferred) · 1
Inferred from how NVD named this product before; not given by a source.
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:jupyter:jupyterlab:*:*:*:*:*:*:*:* | — | — | jupyterlab |
- cpe:2.3:a:jupyter:jupyterlab:*:*:*:*:*:*:*:* Versions — — ·jupyterlab
Remediation
- Fix · CNA jupyterlab (jupyterlab) Fixed in 4.5.11, 4.6.4
- Fix · GHSA-3325-v43h-43rv jupyterlab (PyPI) Fixed in 4.6.4 Advisory →
- Fix · GHSA-3325-v43h-43rv jupyterlab (PyPI) Fixed in 4.5.11 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Migration Toolkit for Applications 8 | Affected | No fix planned: Out of support scope |
| Red Hat OpenShift AI (RHOAI) | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-102904
- 2026-10-03 Alias added: GHSA-3325-v43h-43rv
References
Other 7
- https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-3325-v43h-43rv
- https://github.com/jupyterlab/jupyterlab/commit/a274a8276b9185d03efd4c3c20713d3137ac49e6
- https://github.com/jupyterlab/jupyterlab/commit/e277bc958e737130ac47b6c5078d08b29298828f
- https://github.com/jupyterlab/jupyterlab/releases/tag/v4.5.11
- https://github.com/jupyterlab/jupyterlab/releases/tag/v4.6.4
- https://github.com/jupyterlab/jupyterlab/commit/9e1951e57da499ca66ef5e0caf68e71ad2e3d1a5
- https://github.com/jupyterlab/jupyterlab
More jupyterlab vulnerabilities
- TI-2026-32161 Jupyter Enterprise Gateway Has Kubernetes Manifest Injection via Jinja2 Template Rendering CVSS 4.0CRITICAL 10.0
- TI-2026-32160 Jupyter Enterprise Gateway: Jinja2 Template Server Side Template Injection results in Remote Code Execution CVSS 4.0CRITICAL 10.0
- TI-2026-32159 Jupyter Enterprise Gateway: ContainerProcessProxy._enforce_prohibited_ids can be Bypassed CVSS 3.1CRITICAL 9.8
- TI-2024-26623 Remote Code Execution (RCE) vulnerability in jupyterlab extension template `update-integration-tests` GitHub Action CVSS 3.1CRITICAL 10.0
- TI-2026-78983 Path traversal in nbconvert lets crafted notebooks write files CVSS 4.0HIGH 8.8
- TI-2026-39372 JupyterLab Git: Stored XSS leading to RCE CVSS 4.0CRITICAL 9.3
Sources
- CVE-2026-102904 · CVE Program
- CVE-2026-102904 · NVD
- FIRST EPSS
- GHSA-3325-v43h-43rv · GitHub Advisory Database · CC BY 4.0
- CVE-2026-102904 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences