●Change8

Migrating to Traefik v3.6.4

Version v3.6.4 introduces 2 breaking changes. This guide details how to update your code.

Released: 12/5/2025

2
Breaking Changes
2
Migration Steps
2
Affected Symbols

⚠️ Check Your Code

If you use any of these symbols, you need to read this guide:

ForwardAuthnginx.ingress.kubernetes.io/proxy-ssl-verify

Breaking Changes

●Issue #1

A breaking change was introduced related to CVE-2025-66490. Users must consult the migration guide for necessary adjustments.

●Issue #2

A breaking change was introduced related to CVE-2025-66491.

Migration Steps

  1. 1
    Review and apply necessary changes detailed in the migration guide for v3.6 due to CVE-2025-66490.
  2. 2
    Review and apply necessary changes detailed in the migration guide for v3.6 due to CVE-2025-66491.

Release Summary

This release addresses several CVEs, including critical security fixes, and includes numerous bug fixes across various components like server, plugins, HTTP/3, and Kubernetes ingress-nginx integration. Users are strongly advised to review the migration guide due to breaking changes associated with the fixed CVEs.

Need More Details?

View the full release notes and all changes for Traefik v3.6.4.

View Full Changelog