v2.11.56

asheshgoplani/agent-deckv2.11.56Aug 26, 2026by github-actions[bot]

Upgrading?

AI Summary

A security-focused release for v2.11.56 that applies HTTP/3 timeouts and fixes header handling. It also introduces validation to reject negative weights in TCP and UDP weighted services.

Key Highlights

  • Fixed 2 security advisories (CVEs).
  • Applied HTTP/3 timeouts and max header bytes.
  • Added an entry point option to handle request headers with aliasing names.
  • Rejeced negative weights in TCP and UDP weighted services.
  • Bumped etcd client modules to v3.5.33.

Full Release Notes

**Important:** Please read the [migration guide](https://doc.traefik.io/traefik/v2.11/migration/v2/#v21156).

**CVE fixed:**
- Advisory [GHSA-7ghq-v6jf-g56c](https://github.com/traefik/traefik/security/advisories/GHSA-7ghq-v6jf-g56c)
- Advisory [GHSA-rf44-j88r-hh8c](https://github.com/traefik/traefik/security/advisories/GHSA-rf44-j88r-hh8c)

**Bug fixes:**
- **[http3]** Apply read timeout, idle timeout, and max header bytes for HTTP/3 ([#13717](https://github.com/traefik/traefik/pull/13717) @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)

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