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CVE-2026-76892 – tsParticles: Malformed JSON requests can terminate the @tsparticles/mcp-server HTTP process

Posted on November 5, 2026
CVE ID :CVE-2026-76892

Published : Nov. 4, 2026, 11:17 p.m. | 1 hour, 48 minutes ago

Description :tsParticles is a TypeScript library for creating highly customizable particle animations. Prior to 4.3.1, the HTTP mode of @tsparticles/mcp-server calls JSON.parse outside a request-local error boundary in the POST /mcp handler in integrations/mcp-server/src/index.ts. A single unauthenticated malformed JSON body raises a SyntaxError that terminates the Node.js process, leaving the MCP service unavailable until an external supervisor restarts it. This issue is fixed in version 4.3.1.

Severity: 8.7 | HIGH

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