CVE-2026-63655

{
  "id": "CVE-2026-63655",
  "sourceIdentifier": "[email protected]",
  "published": "2026-11-04T22:18:07.350",
  "lastModified": "2026-11-04T22:18:07.350",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "tsParticles is a TypeScript library for creating highly customizable particle animations. Prior to 4.3.1, the HTTP mode of @tsparticles/mcp-server accepts unauthenticated POST /mcp requests in integrations/mcp-server/src/index.ts and accumulates every request-body chunk in a Buffer[] without a cumulative size limit before Buffer.concat and JSON.parse. A remote attacker can stream an arbitrarily large body to exhaust Node.js process memory and terminate the service, including in the official Docker configuration that exposes HTTP mode on 0.0.0.0:3000. Confidentiality and integrity are not affected. This issue is fixed in version 4.3.1."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "tsparticles",
          "product": "tsparticles",
          "versions": [
            {
              "version": "< 4.3.1",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "@tsparticles",
          "product": "mcp-server",
          "versions": [
            {
              "version": "< 4.3.1",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/tsparticles/tsparticles/commit/25fb70e7f527a91568adaef576570289083f243b",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/tsparticles/tsparticles/commit/7b3a9488d4201fe9ddd5fec05f4a2ae65d3627ea",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/tsparticles/tsparticles/pull/5875",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/tsparticles/tsparticles/releases/tag/v4.3.1",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/tsparticles/tsparticles/security/advisories/GHSA-447x-qqwf-m7xq",
      "source": "[email protected]"
    }
  ]
}