In Jupyter Notebook before 5.4.1, a maliciously forged notebook file can bypass…
Priority LOW 36Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub.
Summary
In Jupyter Notebook before 5.4.1, a maliciously forged notebook file can bypass sanitization to execute JavaScript in the notebook context. Specifically, invalid HTML is 'fixed' by jQuery after sanitization, making it dangerous.
Why it matters now
EPSS 0.01004 63rd percentileScored 2026-11-07
Fix Fixed notebook (PyPI): 5.4.1
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | notebook (PyPI) | before 5.4.1 | 5.4.1 | Patch available | GHSA-6cwv-x26c-w2q4 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- notebook (PyPI) Vendor— Affected before 5.4.1 Fixed in 5.4.1 Patch available GHSA-6cwv-x26c-w2q4
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:jupyter:notebook:*:*:*:*:*:*:*:* | before 5.4.1 | Vulnerable | jupyterlab |
- cpe:2.3:a:jupyter:notebook:*:*:*:*:*:*:*:* Versions before 5.4.1 Vulnerable ·jupyterlab
Remediation
- Fix · GHSA-6cwv-x26c-w2q4 notebook (PyPI) Fixed in 5.4.1 Advisory →
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2018-8768
- 2026-10-03 Alias added: GHSA-6cwv-x26c-w2q4
References
Advisory 2
More jupyterlab Notebook vulnerabilities
- TI-2021-12464 Failure to Sanitize Special Elements into a Different Plane (Special Element Injection) in notebook CVSS 3.1CRITICAL 10.0
- TI-2022-08572 Insertion of Sensitive Information into Log File affects Jupyter Notebook CVSS 3.1HIGH 7.5
- TI-2026-30837 jupyterlab: Command linker attributes in HTML enable one-click command execution from untrusted content CVSS 4.0HIGH 8.6
- TI-2015-06101 The editor in IPython Notebook before 3.2.2 and Jupyter Notebook 4.0.x before 4.0.5… CVSS 2.0MEDIUM 6.8
- TI-2024-14994 Potential authentication and CSRF tokens leak in JupyterLab CVSS 3.1HIGH 7.6
- TI-2024-29399 HTML injection in Jupyter Notebook and JupyterLab leading to DOM Clobbering CVSS 3.1HIGH 7.6
Sources
- CVE-2018-8768 · CVE Program
- CVE-2018-8768 · NVD
- FIRST EPSS
- GHSA-6cwv-x26c-w2q4 · GitHub Advisory Database · CC BY 4.0
- CVE-2018-8768 · 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