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CVE-2026-21637

🗓️ 20 Jan 2026 20:41:55Reported by hackeroneType 
cve
 cve
🔗 web.nvd.nist.gov📰️ 2 Media mentions👁 39 Views

CVE-2026-21637: Node.js TLS error handling flaw allows remote crashes via pre shared key or ALPN callbacks during handshake.

Related
Detection
Affected
Refs
Social
NVD
Vulners
Node
nodejsnode.jsRange4.0.020.20.0-
OR
nodejsnode.jsRange22.0.022.22.0-
OR
nodejsnode.jsRange24.0.024.13.0-
OR
nodejsnode.jsRange25.0.025.3.0-
[
  {
    "defaultStatus": "unaffected",
    "vendor": "nodejs",
    "product": "node",
    "versions": [
      {
        "version": "20.19.6",
        "status": "affected",
        "lessThanOrEqual": "20.19.6",
        "versionType": "semver"
      },
      {
        "version": "22.21.1",
        "status": "affected",
        "lessThanOrEqual": "22.21.1",
        "versionType": "semver"
      },
      {
        "version": "24.12.0",
        "status": "affected",
        "lessThanOrEqual": "24.12.0",
        "versionType": "semver"
      },
      {
        "version": "25.2.1",
        "status": "affected",
        "lessThanOrEqual": "25.2.1",
        "versionType": "semver"
      },
      {
        "version": "4.0",
        "status": "affected",
        "lessThan": "4.*",
        "versionType": "semver"
      },
      {
        "version": "5.0",
        "status": "affected",
        "lessThan": "5.*",
        "versionType": "semver"
      },
      {
        "version": "6.0",
        "status": "affected",
        "lessThan": "6.*",
        "versionType": "semver"
      },
      {
        "version": "7.0",
        "status": "affected",
        "lessThan": "7.*",
        "versionType": "semver"
      },
      {
        "version": "8.0",
        "status": "affected",
        "lessThan": "8.*",
        "versionType": "semver"
      },
      {
        "version": "9.0",
        "status": "affected",
        "lessThan": "9.*",
        "versionType": "semver"
      },
      {
        "version": "10.0",
        "status": "affected",
        "lessThan": "10.*",
        "versionType": "semver"
      },
      {
        "version": "11.0",
        "status": "affected",
        "lessThan": "11.*",
        "versionType": "semver"
      },
      {
        "version": "12.0",
        "status": "affected",
        "lessThan": "12.*",
        "versionType": "semver"
      },
      {
        "version": "13.0",
        "status": "affected",
        "lessThan": "13.*",
        "versionType": "semver"
      },
      {
        "version": "14.0",
        "status": "affected",
        "lessThan": "14.*",
        "versionType": "semver"
      },
      {
        "version": "15.0",
        "status": "affected",
        "lessThan": "15.*",
        "versionType": "semver"
      },
      {
        "version": "16.0",
        "status": "affected",
        "lessThan": "16.*",
        "versionType": "semver"
      },
      {
        "version": "17.0",
        "status": "affected",
        "lessThan": "17.*",
        "versionType": "semver"
      },
      {
        "version": "18.0",
        "status": "affected",
        "lessThan": "18.*",
        "versionType": "semver"
      }
    ]
  }
]

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17 Jun 2026 10:18Current
5.6Medium risk
Vulners AI Score5.6
CVSS 3.17.5
CVSS 35.9
EPSS0.01056
SSVC
39