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CVE-2026-88879 Traefik before v2.11.56 Identity Spoofing via Header Alias

🗓️ 10 Sep 2026 13:05:30Reported by VulnCheckType 
cvelist
 cvelist
🔗 www.cve.org👁 20 Views

Header alias identity spoofing in Traefik through v2.11.55 and v3.7.11 via dot-form headers.

Related
Affected
Refs
[
  {
    "vendor": "traefik",
    "product": "traefik",
    "defaultStatus": "unaffected",
    "packageURL": "pkg:golang/Traefik",
    "versions": [
      {
        "version": "0",
        "status": "affected",
        "versionType": "semver",
        "lessThan": "2.11.56"
      },
      {
        "version": "2.11.56",
        "status": "unaffected",
        "versionType": "semver"
      }
    ]
  },
  {
    "vendor": "traefik",
    "product": "traefik",
    "defaultStatus": "unaffected",
    "packageURL": "pkg:golang/Traefik",
    "versions": [
      {
        "version": "3.0.0",
        "status": "affected",
        "versionType": "semver",
        "lessThanOrEqual": "3.7.13"
      }
    ]
  }
]

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