CVE-2026-88012

Description

Traefik is an open source HTTP reverse proxy and load balancer. From 2.8.2 until 2.11.56 and 3.7.12, HTTP/3 entrypoints do not apply entryPoints..transport.respondingTimeouts.readTimeout because the timeout is enforced on a TCP connection and the HTTP/3 server has no corresponding QUIC stream deadline. An unauthenticated client can use a slow request body, trickling data indefinitely while holding a request and an upstream connection open and exhausting backends with bounded connection pools. This issue is fixed in 2.11.56 and 3.7.12.

References

• https://github.com/traefik/traefik/commit/a8d0bc425859dde7481a6c9a324e610b81d754d0
• https://github.com/traefik/traefik/pull/13717
• https://github.com/traefik/traefik/releases/tag/v2.11.56
• https://github.com/traefik/traefik/releases/tag/v3.7.12
• https://github.com/traefik/traefik/security/advisories/GHSA-7ghq-v6jf-g56c