{"cve":"CVE-2018-21030","nvd":{"published":"2019-10-31T15:15:10.420","modified":"2026-06-17T01:53:59.550","status":"Modified","description":"Jupyter Notebook before 5.5.0 does not use a CSP header to treat served files as belonging to a separate origin. Thus, for example, an XSS payload can be placed in an SVG document.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","score":5.3},"cwes":["CWE-79","CWE-863"],"references":["https://github.com/jupyter/notebook/pull/3341","https://github.com/jupyter/notebook/releases/tag/5.5.0","https://lists.debian.org/debian-lts-announce/2020/11/msg00033.html","https://github.com/jupyter/notebook/pull/3341","https://github.com/jupyter/notebook/releases/tag/5.5.0"],"products":["jupyter:notebook"],"source":"nvd","synced_at":"2026-10-19T20:59:25.448946135+00:00"},"epss":{"cve":"CVE-2018-21030","score":0.01443,"percentile":0.73253,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-jqwc-jm56-wcwj","url":"https://osv.dev/vulnerability/GHSA-jqwc-jm56-wcwj","summary":"Cross-site scripting in Jupyter Notebook","modified":"2024-10-07T15:12:51.790482Z","packages":[{"ecosystem":"PyPI","name":"notebook","purl":"pkg:pypi/notebook","ranges":["<5.5.0rc1"],"fixed":["5.5.0rc1"]}]},{"id":"PYSEC-2019-157","url":"https://osv.dev/vulnerability/PYSEC-2019-157","summary":"","modified":"2023-11-08T04:00:14.113021Z","packages":[{"ecosystem":"PyPI","name":"notebook","purl":"pkg:pypi/notebook","ranges":["<5.5.0"],"fixed":["5.5.0"]}]}],"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."]}