# Traefik v3.7.12

- Product: Traefik (https://whatsnew.fyi/product/traefik)
- Vendor: Traefik Labs
- Date: 2026-08-26
- Version: v3.7.12
- Original notes: https://github.com/traefik/traefik/releases/tag/v3.7.12
- Permalink: https://whatsnew.fyi/product/traefik/releases/v3.7.12

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **fixed** — Include the filename in file provider configuration errors
- **fixed** — Apply read timeout, idle timeout, and max header bytes for HTTP/3
- **fixed** — Fix redirect www host with a non-numeric port
- **fixed** — Fix TLS option name collision across namespaces in the ingress-nginx provider
- **added** — Add an entry point option to handle request headers with aliasing names
- **fixed** — Reject negative weights in TCP and UDP weighted services

**Important:** Please read the [migration guide](https://doc.traefik.io/traefik/v3.7/migrate/v3/#v3712).

**Bug fixes:**
- **[fastproxy]** Bump github.com/valyala/fasthttp to v1.73.0 ([#13769](https://github.com/traefik/traefik/pull/13769) @mmatur)
- **[file]** Include the filename in file provider configuration errors ([#13527](https://github.com/traefik/traefik/pull/13527) @lazerg)
- **[http3]** Apply read timeout, idle timeout, and max header bytes for HTTP/3 ([#13717](https://github.com/traefik/traefik/pull/13717) @gndz07)
- **[k8s]** Fix typos in docs and an OCSP log message ([#13722](https://github.com/traefik/traefik/pull/13722) @MsfPablo)
- **[k8s, k8s/ingress-nginx]** Fix redirect www host with a non-numeric port ([#13708](https://github.com/traefik/traefik/pull/13708) @mmatur)
- **[k8s/ingress-nginx]** Fix TLS option name collision across namespaces in the ingress-nginx provider ([#13721](https://github.com/traefik/traefik/pull/13721) @gndz07)
- **[server]** Add an entry point option to handle request headers with aliasing names ([#13720](https://github.com/traefik/traefik/pull/13720) @rtribotte)
- **[tcp, udp]** Reject negative weights in TCP and UDP weighted services ([#13749](https://github.com/traefik/traefik/pull/13749) @rtribotte)
- Bump etcd client modules to v3.5.33 ([#13756](https://github.com/traefik/traefik/pull/13756) @mmatur)

**Documentation:**
- **[k8s]** Update redirections block reference in basic.md ([#13723](https://github.com/traefik/traefik/pull/13723) @Larzenegger)
- **[k8s]** Fix formatting in Kubernetes setup guide ([#13742](https://github.com/traefik/traefik/pull/13742) @stefkiourk)
- **[security]** Document the security threat model and settled security decisions ([#13740](https://github.com/traefik/traefik/pull/13740) @emilevauge)
- **[service]** Clarify ServersTransport behavior for the errors middleware in Kubernetes ([#13531](https://github.com/traefik/traefik/pull/13531) @lazerg)
- Fix v3.7.11 migration guide ([#13730](https://github.com/traefik/traefik/pull/13730) @gndz07)
- Move Jean-Baptiste Doumenjou and Mathieu Lonjaret to past maintainers ([#13736](https://github.com/traefik/traefik/pull/13736) @emilevauge)
- Reduce SECURITY.md to a pointer to the security documentation ([#13732](https://github.com/traefik/traefik/pull/13732) @emilevauge)
- Update end of support dates ([#13712](https://github.com/traefik/traefik/pull/13712) @nmengin)