{"id":"CVE-2020-36191","aliases":["BIT-jupyterhub-2020-36191","GHSA-7xx3-qp5w-fw96","PYSEC-2021-67"],"url":"https://o3.security/vulnerability/CVE-2020-36191","summary":"Cross-Site Request Forgery in JupyterHub","details":"JupyterHub 1.1.0 allows CSRF in the admin panel via a request that lacks an _xsrf field, as demonstrated by a /hub/api/user request (to add or remove a user account).","published":"2021-01-13T04:15:13.073Z","modified":"2026-07-08T23:35:28.071804Z","cvss":{"score":4.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"PyPI","name":"jupyterhub","fixedVersion":"1.2.0b1"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/jupyterhub/jupyterhub/releases"},{"type":"EVIDENCE","url":"https://github.com/jupyterhub/jupyterhub/issues/3304"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T23:35:28.071804Z"}}