{"action":"Upgrade h2o to 2.2.5+dfsg2-3 or later.","affected":[{"fixed":"2.2.5+dfsg2-3","introduced":"0"}],"component":"h2o","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["2.2.5+dfsg2-3"],"id":"tcs_01M5NED5EWH7YPPR3QKMTGXPQ0","modified_at":"2026-09-21T07:02:57.008260778Z","published_at":"2019-08-13T21:15:12.520Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2019-9515","https://security-tracker.debian.org/tracker/CVE-2019-9515"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2019-9515","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2019-9515"}],"summary":"Some HTTP/2 implementations are vulnerable to a settings flood, potentially leading to a denial of service. The attacker sends a stream of SETTINGS frames to the peer. Since the RFC requires that the"}