{"action":"Upgrade jupyter-server to 2.20.0-1 or later.","affected":[{"fixed":"2.20.0-1","introduced":"0"}],"component":"jupyter-server","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["2.20.0-1"],"id":"tcs_01M5NRY7MB7VKR7JMWP570R15G","modified_at":"2026-10-01T03:03:11.534966393Z","published_at":"2026-05-05T22:16:00.820Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-40934","https://security-tracker.debian.org/tracker/CVE-2026-40934"],"severity":{"label":"medium","score":6.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-40934#Debian:14/jupyter-server","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-40934"}],"summary":"Jupyter Server is the backend for Jupyter web applications. In versions 2.17.0 and earlier, the secret used to sign authentication cookies is persisted to a static file at ~/.local/share/jupyter/runti"}