{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0"}],"component":"node-undici","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":[],"id":"tcs_01M5NQXM9VCDA2TJJW6B1WQZ3Y","modified_at":"2026-10-01T03:02:56.683520858Z","published_at":"2026-09-04T18:17:51.647Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-19534","https://security-tracker.debian.org/tracker/CVE-2026-19534"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-19534","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-19534"}],"summary":"undici's WebSocket client crashes the whole Node.js process during the opening handshake when a server responds with a subprotocol that the client never requested. A default WebSocket connection sends"}