{"id":"GO-2026-6610","revision":"75509654d08946639fbb752038805ef8","records":[{"revision":"75509654d08946639fbb752038805ef8","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GO-2026-6610","aliases":["BIT-golang-2026-78660","CVE-2026-78660"],"title":"HTTP/2 transport accepts malformed framing-related headers in net/http","description":"Historically, we have been rather lax about malformed framing-related headers in our HTTP/2 implementation, as they cannot interfere with HTTP/2 framing. However, this makes it possible for our HTTP/2 implementation to forward responses containing such headers to an HTTP/1 client when acting as a reverse proxy. If the HTTP/1 client also does not behave strictly enough, this can result in response smuggling.","state":0,"publishedAt":"2026-10-08T22:31:09+00:00","modifiedAt":"2026-10-16T09:56:04.3644675+00:00","affected":[{"ecosystem":"Go","name":"stdlib","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"1.26.9"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"stdlib","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"1.27.0-0"},{"kind":"fixed","version":"1.27.2"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"golang.org/x/net","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"0.60.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://go.dev/cl/835145","https://go.dev/cl/836385","https://go.dev/issue/81115","https://groups.google.com/g/golang-announce/c/U2fTuyDJznI"],"sourceUrl":"https://osv.dev/vulnerability/GO-2026-6610","license":"OSV · upstream source license applies","key":"osv:GO-2026-6610","identifiers":["GO-2026-6610","BIT-golang-2026-78660","CVE-2026-78660"]},"retained":false,"historicalAffected":[]}],"coverage":[]}