Kener 3.0.0 before 4.1.10 Authentication Bypass via Hardcoded Fallback JWT Secret

{
  "id": "307905fb50dbfa9ccf018f1932347c7d9568f9d9d0c5038d405dbe3568787c1d",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-116747",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Kener 3.0.0 before 4.1.10 Authentication Bypass via Hardcoded Fallback JWT Secret",
    "summary": "Kener 3.0.0 before 4.1.10 contains an authentication bypass vulnerability that allows unauthenticated attackers to forge session tokens by using the hardcoded DUMMY_SECRET fallback key. When KENER_SECRET_KEY is empty or unset, attackers knowing an administrator email can sign a kener-user cookie to access /manage/api with full administrative privileges or forge password-reset tokens.",
    "evidence": "cve:CVE-2026-116747",
    "products": [
      {
        "name": {
          "value": "kener",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-116747",
      "aliases": [
        "CVE-2026-116747"
      ],
      "metrics": [
        {
          "format": "CVSS",
          "cvssV4_0": {
            "version": "4.0",
            "baseScore": 9.2,
            "attackVector": "NETWORK",
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "userInteraction": "NONE",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "privilegesRequired": "NONE",
            "subIntegrityImpact": "NONE",
            "vulnIntegrityImpact": "HIGH",
            "subAvailabilityImpact": "NONE",
            "vulnAvailabilityImpact": "HIGH",
            "subConfidentialityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH"
          }
        },
        {
          "format": "CVSS",
          "cvssV3_1": {
            "scope": "UNCHANGED",
            "version": "3.1",
            "baseScore": 8.1,
            "attackVector": "NETWORK",
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "integrityImpact": "HIGH",
            "userInteraction": "NONE",
            "attackComplexity": "HIGH",
            "availabilityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "confidentialityImpact": "HIGH"
          }
        }
      ],
      "affected": [
        {
          "repo": "https://github.com/rajnandan1/kener",
          "vendor": "rajnandan1",
          "product": "kener",
          "versions": [
            {
              "status": "affected",
              "version": "3.0.0",
              "lessThan": "4.1.10",
              "versionType": "semver"
            }
          ],
          "packageURL": "pkg:github/rajnandan1/kener",
          "defaultStatus": "unaffected"
        }
      ],
      "modified": "2026-10-26T21:52:45.058Z",
      "provider": "cve",
      "references": [
        "https://github.com/rajnandan1/kener/issues/871",
        "https://github.com/rajnandan1/kener",
        "https://github.com/rajnandan1/kener/commit/ff636483544c926eab5b5e3e26b811c0f52bcaf8",
        "https://github.com/rajnandan1/kener/releases/tag/v4.1.10",
        "https://github.com/rajnandan1/kener/blob/v4.1.9/src/lib/server/controllers/commonController.ts#L44-L55",
        "https://www.vulncheck.com/advisories/kener-3.0.0-before-4.1.10-authentication-bypass-via-hardcoded-fallback-jwt-secret"
      ],
      "provider_metadata": {
        "cna": {
          "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
          "shortName": "VulnCheck",
          "dateUpdated": "2026-10-26T21:52:45.058Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-116747",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 353942,
  "published_at": "2026-10-26T21:52:45.058+00:00"
}