Open redirect in Jupyter Server - CVE-2020-26232
Published: November 18, 2020 / Updated: May 5, 2026
Vulnerability identifier: #VU130160
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2020-26232
CWE-ID: CWE-601
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Jupyter
Affected software:
Jupyter Server
Jupyter Server
Detailed vulnerability description
The vulnerability allows a remote attacker to redirect the browser to a different website.
The vulnerability exists due to improper control of a resource through its lifetime in redirect handling when processing a maliciously crafted link to a jupyter server. A remote attacker can send a specially crafted link to redirect the browser to a different website.
The crafted link may appear to point to a trusted jupyter server but ultimately send the victim to a spoofed server on the public internet.
How to mitigate CVE-2020-26232
Install security update from vendor's website.