CVE-2026-23863

{
  "id": "CVE-2026-23863",
  "sourceIdentifier": "[email protected]",
  "published": "2026-05-01T16:16:29.843",
  "lastModified": "2026-10-26T22:10:00.163",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An attachment spoofing issue in WhatsApp for Windows prior to v2.3000.1032164386.258709 could have allowed maliciously formatted documents with embedded NUL bytes in the filename to be shown in the application as one type of file but run as an executable when opened. We have not seen evidence of exploitation in the wild."
    },
    {
      "lang": "es",
      "value": "Un problema de suplantación de archivos adjuntos en WhatsApp para Windows anterior a la v2.3000.1032164386.258709 podría haber permitido que documentos con formato malicioso con bytes NUL incrustados en el nombre de archivo se mostraran en la aplicación como un tipo de archivo, pero se ejecutaran como un archivo ejecutable al abrirse. No hemos visto evidencia de explotación en la práctica."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Facebook",
          "product": "WhatsApp Desktop for Windows",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "2.3000.*.252500",
              "lessThan": "2.3000.1032164386.258709",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-05-01T17:40:45.569668Z",
          "id": "CVE-2026-23863",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-158"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:windows:*:*",
              "versionEndExcluding": "2.3000.1032164386.258709",
              "matchCriteriaId": "1E1C0BD0-0D92-438F-AB63-A267635A5FDF"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://www.facebook.com/security/advisories/cve-2026-23863",
      "source": "[email protected]",
      "tags": [
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://www.whatsapp.com/security/advisories/2026",
      "source": "[email protected]",
      "tags": [
        "Vendor Advisory"
      ]
    }
  ]
}