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CVE-2026-34072

Full vulnerability record from the local CVENow database.

Description

Cr*nMaster (cronmaster) is a Cronjob management UI with human readable syntax, live logging and log history for cronjobs. Prior to version 2.2.0, an authentication bypass in middleware allows unauthenticated requests with an invalid session cookie to be treated as authenticated when the middleware’s session-validation fetch fails. This can result in unauthorized access to protected pages and unauthorized execution of privileged Next.js Server Actions. This issue has been patched in version 2.2.0.

Severity
CRITICAL
CVSS score
9.8 (v3.1)
Vulnerability status
Analyzed
Source identifier
Published
2026-04-01 18:16:29.340000
Last modified
2026-10-26 22:10:00.163000
View original CVE JSON
{
  "id": "CVE-2026-34072",
  "sourceIdentifier": "[email protected]",
  "published": "2026-04-01T18:16:29.340",
  "lastModified": "2026-10-26T22:10:00.163",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Cr*nMaster (cronmaster) is a Cronjob management UI with human readable syntax, live logging and log history for cronjobs. Prior to version 2.2.0, an authentication bypass in middleware allows unauthenticated requests with an invalid session cookie to be treated as authenticated when the middleware’s session-validation fetch fails. This can result in unauthorized access to protected pages and unauthorized execution of privileged Next.js Server Actions. This issue has been patched in version 2.2.0."
    },
    {
      "lang": "es",
      "value": "CrnMaster (cronmaster) es una interfaz de usuario (UI) para la gestión de Cronjobs con sintaxis legible para humanos, registro en vivo e historial de registros para los cronjobs. Antes de la versión 2.2.0, una omisión de autenticación en el middleware permite que las solicitudes no autenticadas con una cookie de sesión inválida sean tratadas como autenticadas cuando la recuperación de validación de sesión del middleware falla. Esto puede resultar en acceso no autorizado a páginas protegidas y ejecución no autorizada de Acciones de Servidor privilegiadas de Next.js. Este problema ha sido parcheado en la versión 2.2.0."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "fccview",
          "product": "cronmaster",
          "versions": [
            {
              "version": "< 2.2.0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L",
          "baseScore": 8.3,
          "baseSeverity": "HIGH",
          "attackVector": "ADJACENT_NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "LOW"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.5
      },
      {
        "source": "[email protected]",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-04-01T17:45:02.731849Z",
          "id": "CVE-2026-34072",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        },
        {
          "lang": "en",
          "value": "CWE-306"
        },
        {
          "lang": "en",
          "value": "CWE-693"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:fccview:cronmaster:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "2.2.0",
              "matchCriteriaId": "40386133-F58F-4421-A855-B92B5EE863A7"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/fccview/cronmaster/releases/tag/2.2.0",
      "source": "[email protected]",
      "tags": [
        "Release Notes"
      ]
    },
    {
      "url": "https://github.com/fccview/cronmaster/security/advisories/GHSA-9whh-mffv-xvh6",
      "source": "[email protected]",
      "tags": [
        "Vendor Advisory"
      ]
    }
  ]
}