{"id":"GO-2026-6617","revision":"bc639be93177499a82663c853231d4ef","records":[{"revision":"bc639be93177499a82663c853231d4ef","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GO-2026-6617","aliases":["BIT-golang-2026-97032","CVE-2026-97032"],"title":"HTTP/2 server crash due to HPACK encoder race in net/http","description":"HTTP/2 servers could end up crashing due to inadvertently modifying its HPACK encoder concurrently. This happens because the server modifies the HPACK encoder from two goroutines without synchronization: one uses the encoder to encode a HEADERS frame as part of a response sent to a client and the other modifies the encoder's table size when handling a SETTINGS frame containing SETTINGS_HEADER_TABLE_SIZE that a client sends. A malicious client can repeatedly send a request while changing the header table size to crash the server.","state":0,"publishedAt":"2026-10-08T22:31:09+00:00","modifiedAt":"2026-10-16T09:55:57.3507512+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/847188","https://go.dev/cl/847313","https://go.dev/issue/81867","https://groups.google.com/g/golang-announce/c/U2fTuyDJznI","https://groups.google.com/g/golang-announce/c/ZPwCyRUuGBs"],"sourceUrl":"https://osv.dev/vulnerability/GO-2026-6617","license":"OSV · upstream source license applies","key":"osv:GO-2026-6617","identifiers":["GO-2026-6617","BIT-golang-2026-97032","CVE-2026-97032"]},"retained":false,"historicalAffected":[]}],"coverage":[]}