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CVE-2026-42797

Estado: AnalizadaMedia (4.9)—

Exposure of Sensitive Information Through Data Queries vulnerability in Apache Syncope.

An administrator with adequate entitlements for Derived Schemas can create a malicious JEXL expression which allows any administrator with sufficient entitlements for User read to access User-related security-sensitive information.

This issue affects Apache Syncope: 3.0 through 3.0.16, 4.0 through 4.0.5, 4.1.0.

Users are recommended to upgrade to version 4.0.6 / 4.1.1, which fix this issue by further restricting the JEXL expression definition.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Apache — Syncope

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-42797",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-42797",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-05-26T20:06:27.934895Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 4.9,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.2
      }
    ]
  },
  "affected": [
    {
      "source": "security@apache.org",
      "affectedData": [
        {
          "vendor": "Apache Software Foundation",
          "product": "Apache Syncope",
          "versions": [
            {
              "status": "affected",
              "version": "3.0",
              "versionType": "semver",
              "lessThanOrEqual": "3.0.16"
            },
            {
              "status": "affected",
              "version": "4.0",
              "versionType": "semver",
              "lessThanOrEqual": "4.0.5"
            },
            {
              "status": "affected",
              "version": "4.1",
              "versionType": "semver",
              "lessThanOrEqual": "4.1.0"
            }
          ],
          "packageName": "org.apache.syncope.core:syncope-core-provisioning-api",
          "collectionURL": "https://repo.maven.apache.org/maven2",
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-05-25T16:16:20.390",
  "references": [
    {
      "url": "https://lists.apache.org/thread/5y7d277sntyytrmxnx2tfjr9ftcpq1s6",
      "tags": [
        "Mailing List",
        "Vendor Advisory"
      ],
      "source": "security@apache.org"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2026/05/25/5",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@apache.org",
      "description": [
        {
          "lang": "en",
          "value": "CWE-202"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Exposure of Sensitive Information Through Data Queries vulnerability in Apache Syncope.\n\nAn administrator with adequate entitlements for Derived Schemas can create a malicious JEXL expression which allows any administrator with sufficient entitlements for User read to access User-related security-sensitive information.\n\nThis issue affects Apache Syncope: 3.0 through 3.0.16, 4.0 through 4.0.5, 4.1.0.\n\nUsers are recommended to upgrade to version 4.0.6 / 4.1.1, which fix this issue by further restricting the JEXL expression definition."
    },
    {
      "lang": "es",
      "value": "Exposición de Información Sensible A Través de Consultas de Datos vulnerabilidad en Apache Syncope.\n\nUn administrador con permisos adecuados para Esquemas Derivados puede crear una expresión JEXL maliciosa que permite a cualquier administrador con permisos suficientes para lectura de Usuario acceder a información sensible para la seguridad relacionada con el Usuario.\n\nEste problema afecta a Apache Syncope: 3.0 hasta 3.0.16, 4.0 hasta 4.0.5, 4.1.0.\n\nSe recomienda a los usuarios actualizar a la versión 4.0.6 / 4.1.1, que solucionan este problema al restringir aún más la definición de la expresión JEXL."
    }
  ],
  "lastModified": "2026-07-24T10:10:00.197",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:apache:syncope:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "81A43F1F-85A5-405B-B28A-CA2AE38D5454",
              "versionEndIncluding": "3.0.16",
              "versionStartIncluding": "3.0.0"
            },
            {
              "criteria": "cpe:2.3:a:apache:syncope:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4766DF17-5264-4EE6-8819-55E799DE1752",
              "versionEndExcluding": "4.0.6",
              "versionStartIncluding": "4.0.0"
            },
            {
              "criteria": "cpe:2.3:a:apache:syncope:4.1.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "EA64D586-A72F-4350-812A-B3284F47823C"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@apache.org"
}