{"action":"Upgrade jupyter-server to 2.18.0 or later.","affected":[{"fixed":"2.18.0","introduced":"0"}],"component":"jupyter-server","cve_ids":["CVE-2026-35397"],"ecosystem":"PyPI","epss":0.00674,"exploited":false,"fixed_versions":["2.18.0"],"ghsa_id":"GHSA-5789-5fc7-67v3","id":"tcs_01M5KF081SW8JSJQ4CMKS0J2SE","modified_at":"2026-09-10T03:51:04.602794828Z","published_at":"2026-05-05T16:49:10Z","references":["https://osv.dev/vulnerability/GHSA-5789-5fc7-67v3","https://github.com/jupyter-server/jupyter_server/security/advisories/GHSA-5789-5fc7-67v3","https://nvd.nist.gov/vuln/detail/CVE-2026-35397","https://access.redhat.com/errata/RHSA-2026:43038","https://access.redhat.com/errata/RHSA-2026:60520","https://access.redhat.com/security/cve/CVE-2026-35397","https://bugzilla.redhat.com/show_bug.cgi?id=2466858","https://github.com/jupyter-server/jupyter_server","https://github.com/pypa/advisory-database/tree/main/vulns/jupyter-server/PYSEC-2026-68.yaml","https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-35397.json"],"severity":{"label":"high","score":7.1},"sources":[{"source":"osv","source_id":"GHSA-5789-5fc7-67v3","url":"https://osv.dev/vulnerability/GHSA-5789-5fc7-67v3"}],"summary":"Jupyter Server: Path Traversal via incorrect startswith() root directory check allows access to sibling directories"}