---
title: "Announcing Istio 1.30.1"
url: https://daily.dev/posts/announcing-istio-1-30-1-t5vgckfhk
source_url: https://istio.io/latest/news/releases/1.30.x/announcing-1.30.1
type: article
source: "Istio"
published: 2026-06-04T20:48:01.264Z
updated: 2026-06-04T20:48:23.992Z
tags: ["kubernetes", "istio", "service-mesh", "envoy", "gateway-api"]
reading_time: 4
upvotes: 2
comments: 0
language: en
---

> ## Documentation Index
> Fetch the complete documentation index at: https://daily.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Announcing Istio 1.30.1

**[Istio](https://daily.dev/sources/istio)** · 4 min read · 2 upvotes · 0 comments

## Summary

Istio 1.30.1 is a patch release addressing one high-severity CVE and multiple bug fixes. The security update (CVE-2026-47774, CVSS 7.5) fixes a denial-of-service vulnerability in Envoy where crafted HTTP/2 requests could exhaust memory via improper header size accounting. Bug fixes include: a new istioctl analyze check for outdated Gateway API CRDs, nftables JSON support detection with iptables fallback, BackendTLSPolicy conflict resolution, HTTPS listener TLS certificate delivery via ListenerSet, silent dropping of invalid HTTPRoute/GRPCRoute filters, multi-network ambient waypoint routing, consistentHash load balancing regression after scaling, a concurrent map writes panic in istio-cni, an ambient mode health policy contamination bug, agentgateway ListenerSet handling, and a multicluster ClusterStore deadlock fix.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://istio.io/latest/news/releases/1.30.x/announcing-1.30.1>

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---

Tags: [#kubernetes](https://daily.dev/tags/kubernetes), [#istio](https://daily.dev/tags/istio), [#service-mesh](https://daily.dev/tags/service-mesh), [#envoy](https://daily.dev/tags/envoy), [#gateway-api](https://daily.dev/tags/gateway-api)

[View this post on daily.dev](https://daily.dev/posts/announcing-istio-1-30-1-t5vgckfhk)