CVE-2020-26215 json
Open redirect in Jupyter Notebook
published 2020-11-18 5 y ago modified 2026-09-10 1 mo ago also BIT-jupyter-base-notebook-2020-26215 , BIT-jupyter-notebook-2020-26215 , EUVD-2020-0116 , GHSA-c7vm-f5p4-8fqh , PYSEC-2020-215
- cvss
- 4.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.2%
- EPSS 1.2% chance of exploitation in 30 days, percentile 69%
- public exploits
- 0
- none known
Summary
Jupyter Notebook before version 6.1.5 has an 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. The issue is patched in version 6.1.5.
Patch / fix
- pypi notebook 6.1.5
- bitnami jupyter-base-notebook 6.1.5
- bitnami jupyter-notebook 6.1.5
- jupyter notebook 6.1.5
- jupyter-notebook Debian 14, Debian 13, Debian 12 6.1.5-1
debian advisories DEBIAN-CVE-2020-26215
- jupyter-notebook Ubuntu 18.04 LTS 5.2.2-1ubuntu0.1
- jupyter-notebook Ubuntu 20.04 LTS 6.0.3-2ubuntu0.1
ubuntu advisories UBUNTU-CVE-2020-26215
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- python-jupyter_notebook Package Hub 15 SP1 5.7.7-bp151.3.3.1
- python-jupyter_notebook openSUSE Leap 15.1 5.7.7-lp151.2.3.1
- python-notebook openSUSE Leap 15.2 5.7.8-lp152.2.3.1
opensuse advisories openSUSE-SU-2021:0117-1openSUSE-SU-2021:0078-1openSUSE-SU-2021:0024-1
Exploit prediction
1.23% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.4 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:L |
| GitHub | 3.1 | 4.4 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:L |
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 5.8 | AV:N/AC:M/Au:N/C:P/I:P/A:N |
| OSV | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | notebook | <6.1.5 |
6.1.5 |
| bitnami | jupyter-base-notebook | <6.1.5 |
6.1.5 |
| bitnami | jupyter-notebook | <6.1.5 |
6.1.5 |
Affected products
- jupyter notebook
Classification
- Weakness
-
- CWE-601 URL Redirection to Untrusted Site
References
-
github.com
/jupyter/notebook/commit/3cec4bbe21756de9f0c4bccf18cf61d840314d74
web, patch, third-party-advisory, advisory
-
github.com
/jupyter/notebook/security/advisories/GHSA-c7vm-f5p4-8fqh
web, third-party-advisory, advisory
-
lists.debian.org
/debian-lts-announce/2020/12/msg00004.html
mailing-list, web, third-party-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2020-26215
advisory, web
-
github.com
/jupyter/notebook
package
-
github.com
/pypa/advisory-database/tree/main/vulns/notebook/PYSEC-2020-215.yaml
web
Sources
- CVE List CVE-2020-26215
- GitHub Advisory GHSA-c7vm-f5p4-8fqh
- NVD CVE-2020-26215
- OSV BIT-jupyter-base-notebook-2020-26215
- OSV BIT-jupyter-notebook-2020-26215
- OSV PYSEC-2020-215
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.