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CVE-2020-26232

19
FAUCET Score

CVE-2020-26232 is an Open Redirect vulnerability affecting Jupyter Server versions prior to 1.0.6. This flaw allows a maliciously crafted link to a Jupyter server to redirect a user's browser to an arbitrary, potentially spoofed, external website. Rated as Medium severity (CVSS 5.4), it requires user interaction (UI:R) and low privileges (PR:L), leading to potential information disclosure (C:L) and integrity impact (I:L). There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.6CPE matchmatch criteria
cpe:2.3:a:jupyter:jupyter_server:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.1MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.99%
Probability of exploitation in next 30 days
EPSS Percentile
59.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0099 is in the 92nd percentile among its peer group of 15,239 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
pippatch availablevia ghsa
Product: jupyter-serverFixed in: 1.0.6

Vendor Advisories (1)

pipGHSA-grfj-wjv9-4f9vmedium

Open redirect in Jupyter Server

Nov 24, 2020

References

github.com / jupyter/jupyter_server/security/advisories/GHSA-grfj-wjv9-4f9v
Third Party Advisory
github.com / jupyter-server/jupyter_server/blob/master/CHANGELOG.md
Release NotesThird Party Advisory
github.com / jupyter-server/jupyter_server/commit/3d83e49090289c431da253e2bdb8dc479cbcb157
PatchThird Party Advisory