{"id":"UBUNTU-CVE-2020-36191","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).","modified":"2026-05-20T16:04:32.130396584Z","published":"2021-01-13T04:15:00Z","upstream":["CVE-2020-36191"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-36191"},{"type":"REPORT","url":"https://github.com/jupyterhub/jupyterhub/issues/3304"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-36191"}],"affected":[{"package":{"name":"jupyterhub","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/jupyterhub?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.0+ds1-1","2.0.0+ds1-2"],"ecosystem_specific":{"binaries":[{"binary_name":"jupyterhub","binary_version":"2.0.0+ds1-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-36191.json"}},{"package":{"name":"jupyterhub","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/jupyterhub?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.0+ds1-1"],"ecosystem_specific":{"binaries":[{"binary_name":"jupyterhub","binary_version":"3.0.0+ds1-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-36191.json"}},{"package":{"name":"jupyterhub","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/jupyterhub?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.2.1+ds1-2","5.2.1+ds1-3","5.2.1+ds1-4"],"ecosystem_specific":{"binaries":[{"binary_name":"jupyterhub","binary_version":"5.2.1+ds1-4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-36191.json"}},{"package":{"name":"jupyterhub","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/jupyterhub?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.2.1+ds1-4"],"ecosystem_specific":{"binaries":[{"binary_name":"jupyterhub","binary_version":"5.2.1+ds1-4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-36191.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:N"},{"type":"Ubuntu","score":"medium"}]}