Open redirect in Jupyter Notebook
Impact
What kind of vulnerability is it? Who is impacted?
Open redirect vulnerability - a maliciously crafted link to a notebook server could redirect the browser to a different website.
All notebook servers are technically affected, however, these maliciously crafted links can only be reasonably made for known notebook server hosts. A link to your notebook server may appear safe, but ultimately redirect to a spoofed server on the public internet.
Patches
Has the problem been patched? What versions should users upgrade to?
Patched in notebook 6.1.5
References
For more information
If you have any questions or comments about this advisory, or vulnerabilities to report, please email our security list security@ipython.org.
Credit: zhuonan li of Alibaba Application Security Team
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | notebook | < 6.1.5 | 6.1.5 |
References
- https://github.com/jupyter/notebook/security/advisories/GHSA-c7vm-f5p4-8fqh
- https://github.com/jupyter/notebook/commit/3cec4bbe21756de9f0c4bccf18cf61d840314d74
- https://lists.debian.org/debian-lts-announce/2020/12/msg00004.html
- https://nvd.nist.gov/vuln/detail/CVE-2020-26215
- https://github.com/jupyter/notebook
- https://github.com/pypa/advisory-database/tree/main/vulns/notebook/PYSEC-2020-215.yaml
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:L- Weakness (CWE)
CWE-601- Platform
- Python (PyPI)
- Package
notebook- Disclosed
- 18.11.2020
- Updated
- 11.10.2026 15:17
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2020-215 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-c7vm-f5p4-8fqh - CC BY 4.0
Vulnerability history: notebook
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 21
- First → latest
- 09.2015 10.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 8
- Medium 11
- Low 1
Disclosures per year
- 2017: 0
- 2018: 3
- 2019: 4
- 2020: 1
- 2021: 2
- 2022: 2
- 2023: 0
- 2024: 3
- 2025: 0
- 2026: 4
earlier: 2
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