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CVE-2026-84428 fastify vulnerable to header validation bypass via incomplete schema case normalization

🗓️ 04 Sep 2026 10:24:27Reported by openjsType 
cvelist
 cvelist
🔗 www.cve.org👁 20 Views

Header validation bypass in fastify before 5.12.2 via incomplete case normalization in dependencies.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-84428
4 Sep 202610:27
circl
cve
CVE
CVE-2026-84428
4 Sep 202610:24
cve
euvd
EUVD
EUVD-2026-70998
4 Sep 202610:24
euvd
nvd
NVD
CVE-2026-84428
4 Sep 202611:17
nvd
ptsecurity
Positive Technologies
PT-2026-85472
4 Sep 202600:00
ptsecurity
redhatcve
RedhatCVE
CVE-2026-84428
4 Sep 202611:13
redhatcve
vulnrichment
Vulnrichment
CVE-2026-84428 fastify vulnerable to header validation bypass via incomplete schema case normalization
4 Sep 202610:24
vulnrichment
[
  {
    "vendor": "fastify",
    "product": "fastify",
    "defaultStatus": "unaffected",
    "versions": [
      {
        "versionType": "semver",
        "status": "affected",
        "version": "0",
        "lessThan": "5.12.2"
      },
      {
        "versionType": "semver",
        "status": "unaffected",
        "version": "5.12.2"
      }
    ],
    "packageURL": "pkg:npm/fastify"
  }
]

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