{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-63655", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-07-17T14:47:08.031Z", "datePublished": "2026-11-04T22:01:50.183Z", "dateUpdated": "2026-11-04T22:01:50.183Z"}, "containers": {"cna": {"title": "tsParticles: Unbounded HTTP Request Body Buffering in @tsparticles/mcp-server Leads to Remote DoS", "problemTypes": [{"descriptions": [{"cweId": "CWE-400", "lang": "en", "description": "CWE-400: Uncontrolled Resource Consumption", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/tsparticles/tsparticles/security/advisories/GHSA-447x-qqwf-m7xq", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/tsparticles/tsparticles/security/advisories/GHSA-447x-qqwf-m7xq"}, {"name": "https://github.com/tsparticles/tsparticles/pull/5875", "tags": ["x_refsource_MISC"], "url": "https://github.com/tsparticles/tsparticles/pull/5875"}, {"name": "https://github.com/tsparticles/tsparticles/commit/25fb70e7f527a91568adaef576570289083f243b", "tags": ["x_refsource_MISC"], "url": "https://github.com/tsparticles/tsparticles/commit/25fb70e7f527a91568adaef576570289083f243b"}, {"name": "https://github.com/tsparticles/tsparticles/commit/7b3a9488d4201fe9ddd5fec05f4a2ae65d3627ea", "tags": ["x_refsource_MISC"], "url": "https://github.com/tsparticles/tsparticles/commit/7b3a9488d4201fe9ddd5fec05f4a2ae65d3627ea"}, {"name": "https://github.com/tsparticles/tsparticles/releases/tag/v4.3.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/tsparticles/tsparticles/releases/tag/v4.3.1"}], "affected": [{"vendor": "tsparticles", "product": "tsparticles", "versions": [{"version": "< 4.3.1", "status": "affected"}]}, {"vendor": "@tsparticles", "product": "mcp-server", "versions": [{"version": "< 4.3.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-11-04T22:01:50.183Z"}, "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."}], "source": {"advisory": "GHSA-447x-qqwf-m7xq", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "tsparticles", "vendor": "tsparticles", "versions": [{"status": "affected", "version": "< 4.3.1"}]}, {"product": "mcp-server", "vendor": "@tsparticles", "versions": [{"status": "affected", "version": "< 4.3.1"}]}], "source": "security-advisories@github.com"}], "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."}], "id": "CVE-2026-63655", "lastModified": "2026-11-04T22:18:07.350", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-11-04T22:18:07.350", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/tsparticles/tsparticles/commit/25fb70e7f527a91568adaef576570289083f243b"}, {"source": "security-advisories@github.com", "url": "https://github.com/tsparticles/tsparticles/commit/7b3a9488d4201fe9ddd5fec05f4a2ae65d3627ea"}, {"source": "security-advisories@github.com", "url": "https://github.com/tsparticles/tsparticles/pull/5875"}, {"source": "security-advisories@github.com", "url": "https://github.com/tsparticles/tsparticles/releases/tag/v4.3.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/tsparticles/tsparticles/security/advisories/GHSA-447x-qqwf-m7xq"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}