CVE-2026-76892

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

Published Nov 4, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
Github GHSA Github GHSA GHSA-4p8p-pjpq-2w7h tsParticles: Malformed JSON requests can terminate the @tsparticles/mcp-server HTTP process
History
Type Values Removed Values Added
First Time appeared Tsparticles
Tsparticles mcp-server
Tsparticles tsparticles
Vendors & Products Tsparticles
Tsparticles mcp-server
Tsparticles tsparticles
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title tsParticles: Malformed JSON requests can terminate the @tsparticles/mcp-server HTTP process
Weaknesses CWE-248
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Nov 5, 2026, 8:25 PM
Reserved
Aug 19, 2026, 10:43 PM
Status
Deferred
Published
Nov 4, 2026, 11:17 PM
Modified
Nov 6, 2026, 9:32 PM