Impact

Open Redirect Vulnerability. Maliciously crafted login links to known Jupyter Servers can cause successful login or an already logged-in session to be redirected to arbitrary sites, which should be restricted to Jupyter Server-served URLs.

Patches

Upgrade to Jupyter Server 2.7.2

Workarounds

None.

References

Vulnerability reported by user davwwwx via the bug bounty program sponsored by the European Commission and hosted on the Intigriti platform.

• https://blog.xss.am/2023/08/cve-2023-39968-jupyter-token-leak/

References

• GHSA-r726-vmfq-j9j3
• https://nvd.nist.gov/vuln/detail/CVE-2023-39968
• jupyter-server/jupyter_server@2903625
• https://github.com/pypa/advisory-database/tree/main/vulns/jupyter-server/PYSEC-2023-155.yaml
• https://blog.xss.am/2023/08/cve-2023-39968-jupyter-token-leak
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NRP7DNZYVOIA4ZB3U3ZWKTFZEPYWNGCQ
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XDKQAWQN6SQTOVACZNXYKEHWQXGG4DOF