Jupyter Notebook before 5.5.0 does not use a CSP header to treat served files as…
Priority LOW 27CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting, Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-79 and CWE-863.
Summary
Jupyter Notebook before 5.5.0 does not use a CSP header to treat served files as belonging to a separate origin. Thus, for example, an XSS payload can be placed in an SVG document.
Why it matters now
EPSS 0.01443 73rd percentileScored 2026-11-07
Fix Fixed notebook (PyPI): 5.5.0rc1
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 5.5.0rc1 | 5.5.0rc1 | Patch available | GHSA-jqwc-jm56-wcwj |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- notebook (PyPI) Vendor— Affected before 5.5.0rc1 Fixed in 5.5.0rc1 Patch available GHSA-jqwc-jm56-wcwj
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:jupyter:notebook:*:*:*:*:*:*:*:* | before 5.5.0 | Vulnerable | jupyterlab |
- cpe:2.3:a:jupyter:notebook:*:*:*:*:*:*:*:* Versions before 5.5.0 Vulnerable ·jupyterlab
Remediation
- Fix · GHSA-jqwc-jm56-wcwj notebook (PyPI) Fixed in 5.5.0rc1 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2018-21030
- 2026-10-03 Alias added: GHSA-jqwc-jm56-wcwj
References
Advisory 3
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-2018-06323 In Jupyter Notebook before 5.4.1, a maliciously forged notebook file can bypass… CVSS 3.0HIGH 7.8
- 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
Sources
- CVE-2018-21030 · CVE Program
- CVE-2018-21030 · NVD
- FIRST EPSS
- GHSA-jqwc-jm56-wcwj · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences