CVE-2026-66776

{
  "id": "CVE-2026-66776",
  "sourceIdentifier": "[email protected]",
  "published": "2026-08-11T01:17:24.030",
  "lastModified": "2026-10-24T16:10:00.153",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "SAP Approuter does not consistently enforce integrity verification on certain session-related request headers under specific conditions. An attacker with low privileges could send a specially crafted request that bypasses the integrity check and loads another user's session context. Successful exploitation requires the attacker to have previously observed matching session values out-of-band, which makes the attack complex to execute. This could result in a high impact on confidentiality and a low impact on integrity. There is no impact on availability."
    },
    {
      "lang": "es",
      "value": "SAP Approuter no aplica consistentemente la verificación de integridad en ciertos encabezados de solicitud relacionados con la sesión bajo condiciones específicas. Un atacante con privilegios bajos podría enviar una solicitud especialmente diseñada que omita la verificación de integridad y cargue el contexto de sesión de otro usuario. La explotación exitosa requiere que el atacante haya observado previamente valores de sesión coincidentes fuera de banda, lo que hace que el ataque sea complejo de ejecutar. Esto podría resultar en un alto impacto en la confidencialidad y un bajo impacto en la integridad. No hay impacto en la disponibilidad."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "SAP_SE",
          "product": "SAP Business AI Platform (Approuter)",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "SAP Approuter node.js package < 23.0.0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 4.2
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-08-11T13:16:15.300819Z",
          "id": "CVE-2026-66776",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-347"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:sap:approuter:*:*:*:*:*:node.js:*:*",
              "versionEndExcluding": "23.0.0",
              "matchCriteriaId": "BC1312BC-17DB-45F4-864B-606D46FFFDEE"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://me.sap.com/notes/3786038",
      "source": "[email protected]",
      "tags": [
        "Permissions Required"
      ]
    },
    {
      "url": "https://url.sap/sapsecuritypatchday",
      "source": "[email protected]",
      "tags": [
        "Vendor Advisory"
      ]
    }
  ]
}