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CVE-2026-32280 Unexpected work during chain building in crypto/x509

šŸ—“ļøĀ 08 Apr 2026Ā 01:06:58Reported byĀ GoTypeĀ 
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Ā cvelist
šŸ”—Ā www.cve.orgšŸ‘Ā 33Ā Views

CVE-2026-32280 causes excessive work in chain building with many intermediates, enabling DoS in crypto/x509 and crypto/tls.

Related
Affected
Refs
[
  {
    "vendor": "Go standard library",
    "product": "crypto/x509",
    "collectionURL": "https://pkg.go.dev",
    "packageName": "crypto/x509",
    "versions": [
      {
        "version": "0",
        "lessThan": "1.25.9",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "1.26.0-0",
        "lessThan": "1.26.2",
        "status": "affected",
        "versionType": "semver"
      }
    ],
    "programRoutines": [
      {
        "name": "Certificate.buildChains"
      },
      {
        "name": "Certificate.Verify"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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