Double flow control refund on HTTP/2 server streams in net/http

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2026-78663 · Microsoft / collected KEV context

EUVD-2026-95427

GO-2026-6612

BIT-golang-2026-78663

cve-program · CVE-2026-78663

• 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
• https://pkg.go.dev/vuln/GO-2026-6612

euvd · EUVD-2026-95427

• 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
• https://pkg.go.dev/vuln/GO-2026-6612

nvd · CVE-2026-78663

• 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
• https://pkg.go.dev/vuln/GO-2026-6612

osv · 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

• The HTTP/2 server can refund connection-level flow control twice for the same data: Once when a client resets a stream (refunding data for any sent-but-unread portion of the stream), and again when a request handler reads the buffered data.… · Advisory content revised · 7 Nov 2026
• The HTTP/2 server can refund connection-level flow control twice for the same data: Once when a client resets a stream (refunding data for any sent-but-unread portion of the stream), and again when a request handler reads the buffered data.… · Advisory content revised · 5 Nov 2026
• The HTTP/2 server can refund connection-level flow control twice for the same data: Once when a client resets a stream (refunding data for any sent-but-unread portion of the stream), and again when a request handler reads the buffered data.… · Advisory content revised · 1 Nov 2026
• The HTTP/2 server can refund connection-level flow control twice for the same data: Once when a client resets a stream (refunding data for any sent-but-unread portion of the stream), and again when a request handler reads the buffered data.… · Advisory content revised · 30 Oct 2026