{"action":"Upgrade stdlib to 1.26.9 or later.","affected":[{"fixed":"1.26.9","introduced":"0"},{"fixed":"1.27.2","introduced":"1.27.0-0"}],"component":"stdlib","cve_ids":["CVE-2026-78663"],"ecosystem":"Go","exploited":false,"fixed_versions":["1.26.9","1.27.2"],"id":"tcs_01M5JHH4HYSMFVFM3W035VWAC1","modified_at":"2026-10-16T09:55:54.129082194Z","published_at":"2026-10-08T22:31:09Z","references":["https://osv.dev/vulnerability/GO-2026-6612","https://go.dev/cl/847187","https://go.dev/cl/847310","https://go.dev/issue/81743","https://groups.google.com/g/golang-announce/c/U2fTuyDJznI","https://groups.google.com/g/golang-announce/c/ZPwCyRUuGBs"],"severity":{"label":"critical","score":9.1},"sources":[{"source":"osv","source_id":"GO-2026-6612","url":"https://osv.dev/vulnerability/GO-2026-6612"},{"source":"nvd","source_id":"CVE-2026-78663","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-78663"}],"summary":"Double flow control refund on HTTP/2 server streams in net/http"}