{"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"}}}}