CVE-2026-116747 (GCVE-0-2026-116747)
Vulnerability from cvelistv5
Published
2026-10-26 21:52
Modified
2026-10-26 21:52
CWE
  • CWE-321 - Use of Hard-coded Cryptographic Key
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.
Impacted products
Vendor Product Version
rajnandan1 kener Version: 3.0.0   ≤
Create a notification for this product.
Show details on NVD website


{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:github/rajnandan1/kener",
          "product": "kener",
          "repo": "https://github.com/rajnandan1/kener",
          "vendor": "rajnandan1",
          "versions": [
            {
              "lessThan": "4.1.10",
              "status": "affected",
              "version": "3.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "George Chen"
        }
      ],
      "datePublic": "2026-10-09T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 9.2,
            "baseSeverity": "CRITICAL",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          },
          "format": "CVSS"
        },
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-321",
              "description": "Use of Hard-coded Cryptographic Key",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-26T21:52:45.058Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "GitHub Issue #871",
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/rajnandan1/kener/issues/871"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/rajnandan1/kener"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/rajnandan1/kener/commit/ff636483544c926eab5b5e3e26b811c0f52bcaf8"
        },
        {
          "name": "kener v4.1.10 Release Notes",
          "tags": [
            "release-notes"
          ],
          "url": "https://github.com/rajnandan1/kener/releases/tag/v4.1.10"
        },
        {
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/rajnandan1/kener/blob/v4.1.9/src/lib/server/controllers/commonController.ts#L44-L55"
        },
        {
          "name": "VulnCheck Advisory: Kener 3.0.0 before 4.1.10 Authentication Bypass via Hardcoded Fallback JWT Secret",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/kener-3.0.0-before-4.1.10-authentication-bypass-via-hardcoded-fallback-jwt-secret"
        }
      ],
      "title": "Kener 3.0.0 before 4.1.10 Authentication Bypass via Hardcoded Fallback JWT Secret",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-116747",
    "datePublished": "2026-10-26T21:52:45.058Z",
    "dateReserved": "2026-10-26T20:23:37.323Z",
    "dateUpdated": "2026-10-26T21:52:45.058Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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