{"cve":"CVE-2019-10856","nvd":{"published":"2019-04-04T16:29:03.290","modified":"2026-06-17T02:11:44.677","status":"Modified","description":"In Jupyter Notebook before 5.7.8, an open redirect can occur via an empty netloc. This issue exists because of an incomplete fix for CVE-2019-10255.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1},"cwes":["CWE-601"],"references":["https://blog.jupyter.org/open-redirect-vulnerability-in-jupyter-jupyterhub-adf43583f1e4","https://github.com/jupyter/notebook/compare/16cf97c...b8e30ea","https://blog.jupyter.org/open-redirect-vulnerability-in-jupyter-jupyterhub-adf43583f1e4","https://github.com/jupyter/notebook/compare/16cf97c...b8e30ea"],"products":["jupyter:notebook"],"source":"nvd","synced_at":"2026-10-19T20:55:22.313337056+00:00"},"epss":{"cve":"CVE-2019-10856","score":0.01264,"percentile":0.6972,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-rcx2-m7jp-p9wj","url":"https://osv.dev/vulnerability/GHSA-rcx2-m7jp-p9wj","summary":"Jupyter Notebook open redirect vulnerability","modified":"2024-09-26T14:43:51.423817Z","packages":[{"ecosystem":"PyPI","name":"notebook","purl":"pkg:pypi/notebook","ranges":["<5.7.8"],"fixed":["5.7.8"]}]},{"id":"PYSEC-2019-158","url":"https://osv.dev/vulnerability/PYSEC-2019-158","summary":"","modified":"2023-11-08T04:00:58.335604Z","packages":[{"ecosystem":"PyPI","name":"notebook","purl":"pkg:pypi/notebook","ranges":["<5.7.8"],"fixed":["5.7.8"]}]}],"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."]}