Open redirect vulnerability
CVE-2020-26275

6.1MEDIUM

Key Information:

Vendor

Jupyter-server

Status
Jupyter Server
Vendor
CVE Published:
21 December 2020

What is CVE-2020-26275?

The Jupyter Server provides the backend (i.e. the core services, APIs, and REST endpoints) for Jupyter web applications like Jupyter notebook, JupyterLab, and Voila. In Jupyter Server before version 1.1.1, an open redirect vulnerability could cause the jupyter server to redirect the browser to a different malicious website. All jupyter servers running without a base_url prefix are technically affected, however, these maliciously crafted links can only be reasonably made for known jupyter server hosts. A link to your jupyter server may appear safe, but ultimately redirect to a spoofed server on the public internet. This same vulnerability was patched in upstream notebook v5.7.8. This is fixed in jupyter_server 1.1.1. If upgrade is not available, a workaround can be to run your server on a url prefix: "jupyter server --ServerApp.base_url=/jupyter/".

Affected Version(s)

jupyter_server < 1.1.1

References

https://github.com/jupyter-server/jupyter_server/security...
x_refsource_CONFIRM
https://github.com/jupyter-server/jupyter_server/commit/8...
x_refsource_MISC
https://pypi.org/project/jupyter-server/
x_refsource_MISC

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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