Open redirect in Jupyter Notebook

MEDIO 6.1CVE-2020-26215 · BIT-jupyter-base-notebook-2020-26215 · BIT-jupyter-notebook-2020-26215 · Published 18/11/2020 · updated 17/06/2026

In breve

CVE-2020-26215 è una vulnerabilità MEDIO (CVSS 6.1) che riguarda notebook, notebook (jupyter).
Probabilità di sfruttamento nei prossimi 30 giorni (EPSS): 1.2%, superiore al 68.9% delle vulnerabilità.
Correzione: aggiornare a 6.1.5 o successiva.

Package	Affected versions	Patched versions
notebook PyPI	`< 6.1.5`	`6.1.5`
notebook jupyter	`< 6.1.5`	`6.1.5`

Description

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

OWASP page on open redirects

For more information

If you have any questions or comments about this advisory, or vulnerabilities to report, please email our security list [email protected].

Credit: zhuonan li of Alibaba Application Security Team

NVD description

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.