{"cve":"CVE-2026-97032","nvd":{"published":"2026-10-08T23:17:06.213","modified":"2026-10-15T16:18:24.967","status":"Awaiting Analysis","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-362"],"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"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:58:01.639778232+00:00"},"epss":{"cve":"CVE-2026-97032","score":0.0049,"percentile":0.41844,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GO-2026-6617","url":"https://osv.dev/vulnerability/GO-2026-6617","summary":"HTTP/2 server crash due to HPACK encoder race in net/http","modified":"2026-10-16T09:55:57.350751224Z","packages":[{"ecosystem":"Go","name":"stdlib","purl":"pkg:golang/stdlib","ranges":["<1.26.9"],"fixed":["1.26.9"]},{"ecosystem":"Go","name":"stdlib","purl":"pkg:golang/stdlib","ranges":[">=1.27.0-0 <1.27.2"],"fixed":["1.27.2"]},{"ecosystem":"Go","name":"golang.org/x/net","purl":"pkg:golang/golang.org/x/net","ranges":["<0.60.0"],"fixed":["0.60.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}