Open redirect in Jupyter Server

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.

Scores

EPSS (exploitation in 30 days)

1.0% · top 37% of all CVEs (6 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.1.

Weakness

• CWE-601 (opens in a new tab)All about CWE-601 and its CVEs

Affected products

• jupyter · jupyter_server

  • affected < 1.0.6

Affected packages

From reviewed advisories of the GitHub Advisory Database.

• PyPIjupyter-serverGHSA-grfj-wjv9-4f9v (opens in a new tab)

References (3)

• https://github.com/jupyter/jupyter_server/security/advisories/GHSA-grfj-wjv9-4f9v (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://github.com/jupyter-server/jupyter_server/commit/3d83e49090289c431da253e2bdb8dc479cbcb157 (opens in a new tab)x_refsource_MISCx_transferred
• https://github.com/jupyter-server/jupyter_server/blob/master/CHANGELOG.md#106---2020-11-18 (opens in a new tab)x_refsource_MISCx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisory GHSA-grfj-wjv9-4f9v (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2020-26232](https://trackcve.app/badge/CVE-2020-26232.svg)](https://trackcve.app/cve/CVE-2020-26232)

Record last updated 4 Aug 2024, 15:56 UTC.