{
  "document": {
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE"
      }
    },
    "lang": "nl",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions:\n\n    NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein.\n\n    NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory.\n    This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings."
      },
      {
        "category": "description",
        "text": "Vercel heeft twee kwetsbaarheden verholpen in Next.js, een React framework voor het ontwikkelen van (web)applicaties.",
        "title": "Feiten"
      },
      {
        "category": "description",
        "text": "Een kwaadwillende kan de kwetsbaarheid met kenmerk CVE-2026-75604 misbruiken voor het uitvoeren van willekeurige code op de applicatieserver. De kwetsbaarheid is alleen aanwezig in Next.js-applicaties die op een Windows-omgeving worden gehost en die een Pages- en App-router gebruiken zonder de Cache Component.\n\nNaast deze kwetsbaarheid is er ook een andere kwetsbaarheid verholpen die kwaadwillenden in staat stelt willekeurige code uit te voeren. Hiertoe dient een malafide mediabestand aan een kwetsbare applicatie te worden aangeboden. Deze kwetsbaarheid heeft ten tijde van publicatie nog geen CVE-kenmerk toegekend gekregen.",
        "title": "Interpretaties"
      },
      {
        "category": "description",
        "text": "Vercel heeft updates uitgebracht om de kwetsbaarheid te verhelpen in Next.js versies 15.5.24 en 16.3.3. Zie bijgevoegde referenties voor meer informatie.",
        "title": "Oplossingen"
      },
      {
        "category": "general",
        "text": "high",
        "title": "Kans"
      },
      {
        "category": "general",
        "text": "medium",
        "title": "Schade"
      },
      {
        "category": "general",
        "text": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
        "title": "CWE-22"
      }
    ],
    "publisher": {
      "category": "coordinator",
      "contact_details": "cert@ncsc.nl",
      "name": "Nationaal Cyber Security Centrum",
      "namespace": "https://www.ncsc.nl/"
    },
    "references": [
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://github.com/vercel/next.js/security/advisories/GHSA-2xp9-vwfh-vxw4"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://github.com/vercel/next.js/security/advisories/GHSA-p293-qw3h-jr36"
      }
    ],
    "title": "Kwetsbaarheden verholpen in Next.js",
    "tracking": {
      "current_release_date": "2026-08-26T09:57:12.094284Z",
      "generator": {
        "date": "2025-08-04T16:30:00Z",
        "engine": {
          "name": "V.A.",
          "version": "1.3"
        }
      },
      "id": "NCSC-2026-0329",
      "initial_release_date": "2026-08-26T09:57:12.094284Z",
      "revision_history": [
        {
          "date": "2026-08-26T09:57:12.094284Z",
          "number": "1.0.0",
          "summary": "Initiele versie"
        }
      ],
      "status": "final",
      "version": "1.0.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:unknown/*",
                "product": {
                  "name": "vers:unknown/*",
                  "product_id": "CSAFPID-1"
                }
              }
            ],
            "category": "product_name",
            "name": "Next.js"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:unknown/*",
                "product": {
                  "name": "vers:unknown/*",
                  "product_id": "CSAFPID-2"
                }
              }
            ],
            "category": "product_name",
            "name": "Vercel Next.js"
          }
        ],
        "category": "vendor",
        "name": "Vercel"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:unknown/*",
                "product": {
                  "name": "vers:unknown/*",
                  "product_id": "CSAFPID-3"
                }
              }
            ],
            "category": "product_name",
            "name": "next.js"
          }
        ],
        "category": "vendor",
        "name": "vercel"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-75604",
      "notes": [
        {
          "category": "description",
          "text": "A vulnerability in Next.js applications using Pages and App router without Cache Component on Windows filesystems can lead to remote code execution on the server.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-75604 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-75604.json"
        }
      ],
      "title": "CVE-2026-75604"
    }
  ]
}