{"action":"Upgrade ngtcp2 to 1.11.0-1+deb13u1 or later.","affected":[{"fixed":"1.11.0-1+deb13u1","introduced":"0"}],"component":"ngtcp2","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1.11.0-1+deb13u1"],"id":"tcs_01M5NRX8Z8NEQWMEPRCHT44EY6","modified_at":"2026-10-01T03:02:39.295356045Z","published_at":"2026-04-16T22:16:38.220Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-40170","https://security-tracker.debian.org/tracker/CVE-2026-40170"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-40170#Debian:13/ngtcp2","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-40170"}],"summary":"ngtcp2 is a C implementation of the IETF QUIC protocol. In versions prior to 1.22.1, ngtcp2_qlog_parameters_set_transport_params() serializes peer transport parameters into a fixed 1024-byte stack buf"}