Migrating to Envoy v1.37.5
Version v1.37.5 introduces 1 breaking change. This guide details how to update your code.
Released: 6/23/2026
⚠️ Check Your Code
If you use any of these symbols, you need to read this guide:
envoy.network.connection_balance.dlbBreaking Changes
●Issue #1
The contrib extension "envoy.network.connection_balance.dlb" (Intel DLB connection balancer) has been disabled at the Bazel layer for all builds and platforms due to a source archive breakage. Users relying on this extension must use local workarounds as described in https://github.com/envoyproxy/envoy/issues/45491.
Migration Steps
- 1If you were using the Intel DLB connection balancer extension, you must implement local workarounds as described in https://github.com/envoyproxy/envoy/issues/45491, as the extension is disabled by default.
Release Summary
Release v1.37.5 focuses heavily on security, addressing numerous CVEs across various components including Authz, HTTP/3, OAuth2, and Zstd decompression. Additionally, the Intel DLB connection balancer extension was disabled due to upstream source archive issues.
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View the full release notes and all changes for Envoy v1.37.5.
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