What’s Vulnerable › Vulnerabilities
CVE-2023-39968: Open Redirect Vulnerability in jupyter-server
- Severity: medium (CVSS 6.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.7% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2023-08-28 · updated 2026-06-17
- Weakness: CWE-601
Description
jupyter-server is the backend for Jupyter web applications. 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. This issue has been addressed in commit `29036259` which is included in release 2.7.2. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Affected products
- jupyter-server jupyter_server: before 2.7.2 — fixed in 2.7.2
How to fix
Upgrade to a fixed version: jupyter-server jupyter_server 2.7.2. Check the vendor advisory for mitigations.
References
- https://github.com/jupyter-server/jupyter_server/commit/290362593b2ffb23c59f8114d76f77875de4b925
- https://github.com/jupyter-server/jupyter_server/security/advisories/GHSA-r726-vmfq-j9j3
- 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/
- https://github.com/jupyter-server/jupyter_server/commit/290362593b2ffb23c59f8114d76f77875de4b925
- https://github.com/jupyter-server/jupyter_server/security/advisories/GHSA-r726-vmfq-j9j3
- 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/
Get alerted when CVE-2023-39968 or the next vulnerability affects your stack