2.0.4 (September 10, 2026) BREAKING CHANGES: acl: Tokens that hold service:write but not mesh:write will now receive a permission-denied error when attempting to attach builtin/lua or builtin/wasm EnvoyExtensions (or upstream envoy_listener_json/envoy_cluster_json escape-hatch overrides) to a service-defaults config entry, or when registering a connect-proxy sidecar with bootstrap or xDS escape-hatch keys set in the top-level Proxy.Config map or per-upstream in Proxy.Upstreams[*].Config. Operators must grant mesh:write to any token that legitimately needs these capabilities. [ GH-23864 ] fips: