{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0"}],"component":"h2o","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":[],"id":"tcs_01M5NS7X53J99X396WDY3W5HPT","modified_at":"2026-10-01T03:03:05.752359590Z","published_at":"2026-07-16T23:16:17.423Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-44453","https://security-tracker.debian.org/tracker/CVE-2026-44453"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-44453","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-44453"}],"summary":"h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. Prior to commit 6b5370d, h2o is vulnerable to a Denial of Service attack when calling alloca under certain conditions. When serving"}