{"cve":"CVE-2023-39968","nvd":{"published":"2023-08-28T21:15:07.777","modified":"2026-06-17T06:13:03.233","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1},"cwes":["CWE-601"],"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"],"products":["jupyter:jupyter_server"],"source":"nvd","synced_at":"2026-10-19T21:39:14.809778102+00:00"},"epss":{"cve":"CVE-2023-39968","score":0.00681,"percentile":0.5243,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-r726-vmfq-j9j3","url":"https://osv.dev/vulnerability/GHSA-r726-vmfq-j9j3","summary":" Open Redirect Vulnerability in jupyter-server","modified":"2026-09-10T03:50:02.877012647Z","packages":[{"ecosystem":"PyPI","name":"jupyter-server","purl":"pkg:pypi/jupyter-server","ranges":["<2.7.2"],"fixed":["2.7.2"]}]},{"id":"PYSEC-2023-155","url":"https://osv.dev/vulnerability/PYSEC-2023-155","summary":"","modified":"2023-11-08T04:13:16.108677Z","packages":[{"ecosystem":"PyPI","name":"jupyter-server","purl":"pkg:pypi/jupyter-server","ranges":["<2.7.2"],"fixed":["2.7.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}