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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👁 50 Views

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

Related
Affected
Refs
ReporterTitlePublishedViews
Family
alpinelinux
AlpineLinux
CVE-2026-88879
10 Sep 202613:05
–alpinelinux
cve
CVE
CVE-2026-88879
10 Sep 202613:05
–cve
euvd
EUVD
EUVD-2026-75429
10 Sep 202613:05
–euvd
mend
Mend
CVE-2026-88879
10 Sep 202613:05
–mend
nvd
NVD
CVE-2026-88879
10 Sep 202614:17
–nvd
osv_cga
osv_cga
CGA-7GJ2-QHX9-JMHH
15 Sep 202612:21
–osv_cga
osv_cga
osv_cga
CGA-CXV4-FW2V-6744
15 Sep 202614:21
–osv_cga
osv_cve
osv_cve
CVE-2026-88011 Traefik: ForwardAuth identity spoofing via dot-form header alias
10 Sep 202615:31
–osv_cve
osv_cve
osv_cve
CVE-2026-88879 Traefik before v2.11.56 Identity Spoofing via Header Alias
10 Sep 202613:05
–osv_cve
osv_ghsa
osv_ghsa
GHSA-RF44-J88R-HH8C Traefik: ForwardAuth identity spoofing via dot-form header alias
10 Sep 202620:28
–osv_ghsa
Rows per page
[
  {
    "vendor": "traefik",
    "product": "traefik",
    "defaultStatus": "unaffected",
    "packageURL": "pkg:golang/github.com/traefik/traefik/v2",
    "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/github.com/traefik/traefik/v3",
    "versions": [
      {
        "version": "3.0.0",
        "status": "affected",
        "versionType": "semver",
        "lessThanOrEqual": "3.7.13"
      }
    ]
  }
]

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08 Oct 2026 15:25Current
CVSS 45.3
EPSS0.00295
SSVC
50