What is CVE-2020-26215?

CVE-2020-26215 is a medium-severity vulnerability in Jupyter Notebook, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.4/10. Published 2020-11-18.

How severe is CVE-2020-26215?

Medium severity. CVSS v3 base score is 4.4 out of 10.

Is CVE-2020-26215 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Open Redirect in Jupyter Notebook

CVE-2020-26215

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 mali…

Vulnerability class: Open Redirect

EPSS: 0.008 (74.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:L.

Affected products

Jupyter Notebook — versions < 6.1.5

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

Public proof-of-concept exploits

References

github.com/jupyter/notebook/security/advisories/GHSA-c7vm-f5p4-8fqh (x_refsource_CONFIRM)
github.com/jupyter/notebook/commit/3cec4bbe21756de9f0c4bccf18cf61d840314d74 (x_refsource_MISC)
[debian-lts-announce] 20201202 [SECURITY] [DLA 2477-1] jupyter-notebook security update (mailing-list, x_refsource_MLIST)

Frequently asked questions

What is CVE-2020-26215?: CVE-2020-26215 is a medium-severity vulnerability in Jupyter Notebook, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.4/10. Published 2020-11-18.
How severe is CVE-2020-26215?: Medium severity. CVSS v3 base score is 4.4 out of 10.
Is CVE-2020-26215 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.