v2.11.57
moorcheh-ai/memantov2.11.57Sep 4, 2026by github-actions[bot]
Upgrading?
AI Summary
A patch release for Traefik v2 focusing on specific security advisories and bug fixes regarding ACME and server request handling.
Key Highlights
- Fixed 4 security advisories.
- Disabled recursive NSS propagation for DNS challenges by default.
- Dedicated a transport per HTTP/3 client connection.
- Denied requests with opaque request targets.
Full Release Notes
**Important:** Please read the [migration guide](https://doc.traefik.io/traefik/v2.11/migration/v2/#v21157). **CVE fixed:** - Advisory [GHSA-qqjf-53cj-pwvv](https://github.com/traefik/traefik/security/advisories/GHSA-qqjf-53cj-pwvv) - Advisory [GHSA-f52w-8j3h-j724](https://github.com/traefik/traefik/security/advisories/GHSA-f52w-8j3h-j724) - Advisory [GHSA-w4v4-9rw7-5326](https://github.com/traefik/traefik/security/advisories/GHSA-w4v4-9rw7-5326) **Bug fixes:** - **[acme]** Disable recursive nss propagation by default for DNS challenge ([#13830](https://github.com/traefik/traefik/pull/13830) @rtribotte) - **[http3]** Dedicate a transport per HTTP/3 client connection ([#13812](https://github.com/traefik/traefik/pull/13812) @sdelicata) - **[server]** Deny request with an opaque request target ([#13796](https://github.com/traefik/traefik/pull/13796) @sdelicata) - **[server]** Do not forward h2c upgrade headers to the backend ([#13797](https://github.com/traefik/traefik/pull/13797) @sdelicata)
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