CVE-2025-64763: Envoy forwards early CONNECT data in TCP proxy mode

December 5, 2025 (updated December 10, 2025)

Forwarding of early CONNECT data in TCP proxy mode.

References

github.com/advisories/GHSA-rj35-4m94-77jh
github.com/envoyproxy/envoy
github.com/envoyproxy/envoy/security/advisories/GHSA-rj35-4m94-77jh
nvd.nist.gov/vuln/detail/CVE-2025-64763

Code Behaviors & Features

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