Bug 2567456 (CVE-2026-76892)

Summary: CVE-2026-76892 tsparticles: @tsparticles/mcp-server: Denial of Service via malformed JSON request
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in @tsparticles/mcp-server. An unauthenticated remote attacker can cause a Denial of Service (DoS) by sending a malformed JSON request to the HTTP server endpoint. Because the application fails to catch parsing errors when handling incoming requests, the invalid payload causes an unhandled exception that crashes the server process, leaving the service unavailable.
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Description OSIDB Bzimport 2026-11-05 21:59:19 UTC 
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.