{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0"}],"component":"python-tornado","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":[],"id":"tcs_01M5NWN04M6XPBA9PEGRVEWR7B","modified_at":"2026-10-09T09:47:23.280507117Z","published_at":"2026-09-15T16:17:58.293Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-91991","https://security-tracker.debian.org/tracker/CVE-2026-91991"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-91991#Debian:14/python-tornado","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-91991"}],"summary":"Tornado before 6.5.8 contains an incomplete fix for cookie attribute injection that allows attackers to inject arbitrary cookie attributes by passing capitalized or legacy keyword arguments to set_coo"}