This Traefik release addresses several important issues that self-hosted users will appreciate. The ACME certificate management library has been updated to ensure smoother Let’s Encrypt integrations, and a subtle bug causing authentication middleware to fail under concurrent requests has been fixed, preventing random 401 errors. For teams running Traefik with Kubernetes, two long-standing problems are resolved: router name collisions in the Gateway API provider no longer disrupt routing, and cross-namespace service references in CRD configurations are now correctly validated, avoiding silent failures.
Multiple dependency bumps strengthen the security posture of your edge router. The tracing integration with DataDog has been upgraded, while core libraries like golang.org/x/text, golang.org/x/net, and the compression middleware have been refreshed to their latest versions. These housekeeping tasks close potential vulnerabilities without changing any behavior, keeping your installation robust against emerging threats.
A documentation improvement clarifies how the auth-url and rewrite-target annotations interact when using the ingress-nginx provider, helping operators configure external authentication more predictably.
