{"action":"Upgrade nats-server to 2.12.4-1 or later.","affected":[{"fixed":"2.12.4-1","introduced":"0"}],"component":"nats-server","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["2.12.4-1"],"id":"tcs_01M5NRF1BEHEYV8ZZW7M6TAQGX","modified_at":"2026-10-01T03:03:09.001739553Z","published_at":"2026-02-24T17:29:03.393Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-27571","https://security-tracker.debian.org/tracker/CVE-2026-27571"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-27571#Debian:14/nats-server","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-27571"}],"summary":"NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. The WebSockets handling of NATS messages handles compressed messages via the WebSockets negotiated compr"}