Go HTTP/2 Connection Flow Control Bypass via Double Refund (CVE-2026-78663)
Security Advisory
CVE-2026-78663
High
Go
Affected:
- net/http < go1.26.9
- net/http/internal/http2 >= go1.27.0 and <= go1.27.2
- golang.org/x/net/http2 < v0.60.0
Fixed in:
- go1.26.9
- go1.27.0
- v0.60.0
Referenced CVEs:
CVE-2026-78663
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