CVE-2026-54342

{
  "id": "CVE-2026-54342",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-24T19:16:59.200",
  "lastModified": "2026-10-24T13:10:00.147",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In epa4all, prior to version 2026-05-20, an attacker on the network path between epa4all and any backend (ePA Aktensystem, Konnektor, IDP, TSS) can present a self-signed TLS certificate and intercept the connection. For non-VAU connections (Konnektor, IDP), this allows direct read and modification of the inner traffic, including smartcard operations and OIDC authentication exchanges. For the ePA backend, the disabled TLS verification is the transport-level enabler for the VAU MITM described in GHSA-vvh7-x6c7-46gh. This issue has been patched in version 2026-05-20."
    },
    {
      "lang": "es",
      "value": "En epa4all, antes de la versión 2026-05-20, un atacante en la ruta de red entre epa4all y cualquier backend (ePA Aktensystem, Konnektor, IDP, TSS) puede presentar un certificado TLS autofirmado e interceptar la conexión. Para conexiones no-VAU (Konnektor, IDP), esto permite la lectura y modificación directa del tráfico interno, incluyendo operaciones de tarjeta inteligente e intercambios de autenticación OIDC. Para el backend de ePA, la verificación TLS deshabilitada es el habilitador a nivel de transporte para el MitM VAU descrito en GHSA-vvh7-x6c7-46gh. Este problema ha sido parcheado en la versión 2026-05-20."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "med-united",
          "product": "epa4all",
          "versions": [
            {
              "version": "< 2026-05-20",
              "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:N",
          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "attackVector": "ADJACENT_NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.2
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-27T16:26:56.443833Z",
          "id": "CVE-2026-54342",
          "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-295"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/med-united/epa4all/releases/tag/2026-05-20",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/med-united/epa4all/security/advisories/GHSA-296w-v8f6-3rf7",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/med-united/epa4all/security/advisories/GHSA-vvh7-x6c7-46gh",
      "source": "[email protected]"
    },
    {
      "url": "https://www.machinespirits.com/advisory/b98b02",
      "source": "[email protected]"
    }
  ]
}