{"action":"Upgrade jupyter-server to 2.18.0 or later.","affected":[{"fixed":"2.18.0","introduced":"0"}],"component":"jupyter-server","cve_ids":["CVE-2026-40934"],"ecosystem":"PyPI","epss":0.00332,"exploited":false,"fixed_versions":["2.18.0"],"ghsa_id":"GHSA-5mrq-x3x5-8v8f","id":"tcs_01M5KF1CMQ36SC8KSZK3N9QV40","modified_at":"2026-09-10T03:50:45.692059585Z","published_at":"2026-05-05T17:03:24Z","references":["https://osv.dev/vulnerability/GHSA-5mrq-x3x5-8v8f","https://github.com/jupyter-server/jupyter_server/security/advisories/GHSA-5mrq-x3x5-8v8f","https://nvd.nist.gov/vuln/detail/CVE-2026-40934","https://github.com/jupyter-server/jupyter_server","https://github.com/pypa/advisory-database/tree/main/vulns/jupyter-server/PYSEC-2026-69.yaml"],"severity":{"label":"medium","score":6.8},"sources":[{"source":"osv","source_id":"GHSA-5mrq-x3x5-8v8f","url":"https://osv.dev/vulnerability/GHSA-5mrq-x3x5-8v8f"}],"summary":"Jupyter Server's Authentication Cookies Remain Valid After Password Reset and Server Restart"}