{"id":"CVE-2026-97032","title":"HTTP/2 servers could end up crashing due to inadvertently modifying its HPACK encoder concurrently","summary":"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 …","severity":"none","published":"2026-10-08","updated":"2026-10-08","sourceUpdated":"2026-10-08T23:17:06.213","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-97032","references":[{"url":"https://go.dev/cl/847188","label":"security@golang.org"},{"url":"https://go.dev/cl/847313","label":"security@golang.org"},{"url":"https://go.dev/issue/81867","label":"security@golang.org"},{"url":"https://groups.google.com/g/golang-announce/c/U2fTuyDJznI","label":"security@golang.org"},{"url":"https://groups.google.com/g/golang-announce/c/ZPwCyRUuGBs","label":"security@golang.org"},{"url":"https://pkg.go.dev/vuln/GO-2026-6617","label":"security@golang.org"}],"tags":["nvd"],"ingestedAt":"2026-10-09T00:19:50.981Z","slug":"CVE-2026-97032","body":"## Overview\n\nHTTP/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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}