Traefik: Cross-user response poisoning via proxied CONNECT on Traefik's shared backend keep-alive pool

Date Aug 6, 2026

Type Vendor advisory

Signal High-risk advisory

Vendor / Product Go · github.com/traefik/traefik/v2

CVE CVE-2026-71324

High-risk advisory CVE-2026-71324

Summary

Traefik: Cross-user response poisoning via proxied CONNECT on Traefik's shared backend keep-alive pool

Why it matters

GitHub has published a reviewed security advisory for github.com/traefik/traefik/v2. Prioritize it with other application dependency updates.

Operator check

Check whether github.com/traefik/traefik/v2 is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. CVSS score: 7.0.

Sources

GitHub Advisory GHSA-3ccp-42pg-hgv6 NVD — CVE-2026-71324 Source reference

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.

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