Vulnerability · Published Nov 24, 2020 · Assigned by GitHub_M

CVE-2020-26232Open redirect in Jupyter Server

Medium 4.1

In plain English

A medium-severity open redirect in jupyter_server from jupyter. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 63% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.1Medium

Exploit odds (30 days)1.0%top 36.9% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

Jupyter Server before version 1.0.6 has an Open redirect vulnerability. A maliciously crafted link to a jupyter server could redirect the browser to a different website. All jupyter servers 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	jupyter-server	1.0.7-1	DEBIAN-CVE-2020-26232
Debian:13	jupyter-server	1.0.7-1	DEBIAN-CVE-2020-26232
Debian:14	jupyter-server	1.0.7-1	DEBIAN-CVE-2020-26232
PyPI	jupyter-server	1.0.6	GHSA-grfj-wjv9-4f9v
PyPI	jupyter-server	1.0.6	PYSEC-2020-234

Affected products (as reported)

Vendor	Product	Versions
jupyter	jupyter_server	< 1.0.6

Weakness: CWE-601 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N

References

https://github.com/jupyter/jupyter_server/security/advisories/GHSA-grfj-wjv9-4f9v x_refsource_CONFIRM
https://github.com/jupyter-server/jupyter_server/commit/3d83e49090289c431da253e2bdb8dc479cbcb157 x_refsource_MISC
https://github.com/jupyter-server/jupyter_server/blob/master/CHANGELOG.md#106---2020-11-18 x_refsource_MISC