Is github.com/traefik/traefik affected by CVE-2025-66490?

Go github.com/traefik/traefik is affected in >=0.

Is CVE-2025-66490 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.3%.

medium

CVE-2025-66490

Go · github.com/traefik/traefik • Go · github.com/traefik/traefik/v2 • Go · github.com/traefik/traefik/v3

Summary

Path Normalization Bypass in Traefik Router + Middleware Rules in github.com/traefik/traefik

Severity: medium
EPSS: 0.3% (p25)
Also known as: GHSA-gm3x-23wp-hc2c, GO-2025-4206#github.com/traefik/traefik, GO-2025-4206#github.com/traefik/traefik/v2, GO-2025-4206#github.com/traefik/traefik/v3
Published: 2025-12-15

References

Related advisories

CVE-2026-53622 — high · Go/github.com/traefik/traefik
CVE-2026-40912 — high · Go/github.com/traefik/traefik
CVE-2026-39858 — high · Go/github.com/traefik/traefik
CVE-2026-35051 — high · Go/github.com/traefik/traefik
GHSA-gv8r-9rw9-9697#github.com/traefik/traefik — high · Go/github.com/traefik/traefik
CVE-2026-54761 — medium · Go/github.com/traefik/traefik
CVE-2026-44774 — medium · Go/github.com/traefik/traefik
CVE-2026-41263 — medium · Go/github.com/traefik/traefik

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.