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

December 5, 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

Detect and mitigate CVE-2025-64763 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →