Answer in brief
CVE-2026-76892 records a High severity (CVSS 8.7) vulnerability in tsParticles: Malformed JSON requests can terminate the @tsparticles/mcp-server HTTP process. The current sources do not mark it as known exploited. The current feed maps @tsparticles/mcp-server (generic), tsparticles/tsparticles (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps @tsparticles/mcp-server (generic), tsparticles/tsparticles (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| @tsparticles/mcp-servergeneric | <4.3.1 | 4.3.1 |
| tsparticles/tsparticlesgeneric | <4.3.1 | 4.3.1 |
Published upstream
Nov 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 4, 2026
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.
Quoted source text, attributed separately from HOL analysis.