{"id":"BIT-golang-2026-97032","summary":"HTTP/2 server crash due to HPACK encoder race in net/http","details":"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.","aliases":["CVE-2026-97032","GO-2026-6617"],"modified":"2026-10-16T09:55:57.350751224Z","published":"2026-10-16T08:40:16.785Z","database_specific":{"severity":"High","cpes":["cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*"]},"references":[{"type":"WEB","url":"https://go.dev/cl/847188"},{"type":"WEB","url":"https://go.dev/cl/847313"},{"type":"WEB","url":"https://go.dev/issue/81867"},{"type":"WEB","url":"https://groups.google.com/g/golang-announce/c/U2fTuyDJznI"},{"type":"WEB","url":"https://groups.google.com/g/golang-announce/c/ZPwCyRUuGBs"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97032"},{"type":"WEB","url":"https://pkg.go.dev/vuln/GO-2026-6617"}],"affected":[{"package":{"name":"golang","ecosystem":"Bitnami","purl":"pkg:bitnami/golang"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.26.9"},{"introduced":"1.27.0-0"},{"fixed":"1.27.2"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/golang/BIT-golang-2026-97032.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}],"schema_version":"1.9.0"}