ETK-2026-971Zero's internal tracking ID, independent of the CVE number.

{
  "etk_id": "ETK-2026-971",
  "cve_id": null,
  "display_id": "ETK-2026-971",
  "ghsa_id": "GHSA-rv2h-qh7j-xrjw",
  "euvd_id": null,
  "status": "published",
  "anchor_state": "awaiting_cve",
  "title": "TLS client-auth policy collision in Traefik Kubernetes Ingress provider",
  "summary": "Traefik v3.7.0 through v3.7.13 can associate an Ingress with another Ingress's client-certificate trust policy when referenced Secret names collide after dot-to-dash normalization. This can allow certificates trusted for one host to satisfy client authentication on another host, while rejecting that host's intended clients; it requires colliding Secret references used with the auth-tls-secret annotation.",
  "mitigation": "Upgrade Traefik to v3.7.14. Until upgraded, avoid auth-tls-secret Secret namespace and name combinations that become identical after replacing dots with dashes, and review affected Ingresses for collisions.",
  "vendor": "go",
  "product": "go:Traefik",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= v3.7.0, <= v3.7.13"
      ],
      "ecosystem": "go",
      "fixed_versions": [
        "v3.7.14"
      ],
      "package_name": "Traefik",
      "purl": "pkg:golang/Traefik"
    }
  ],
  "cwes": [
    287
  ],
  "cvss_score": 7,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 32.88559408333333,
  "t0_at": null,
  "signals": {
    "check": {
      "at": "2026-10-08T13:28:58.846470+00:00",
      "days": -13.408411920462964,
      "is_lower_bound": true,
      "measured_at": "2026-10-21T23:17:05.660118+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-07T08:47:52+00:00",
      "days": -14.603630050902778,
      "is_lower_bound": true,
      "measured_at": "2026-10-21T23:17:05.660118+00:00",
      "url": "https://github.com/traefik/traefik/security/advisories/GHSA-rv2h-qh7j-xrjw"
    }
  }
}