CVE-2026-76892
tsParticles: Malformed JSON requests can terminate the @tsparticles/mcp-server HTTP process
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| tsparticles tsparticles |
< 4.3.1 (affected) | CNA: GitHub_M |
| mcp-server @tsparticles |
< 4.3.1 (affected) | CNA: GitHub_M |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 8.7 high |
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 | CNA: GitHub_M |
| 4.0 / 8.7 high |
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD: [email protected] |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/tsparticles/tsparticles/security/advisories/GHSA-4p8p-pjpq-2w7hCNA: GitHub_M · x_refsource_CONFIRM
- https://github.com/tsparticles/tsparticles/pull/5875CNA: GitHub_M · x_refsource_MISC
- https://github.com/tsparticles/tsparticles/commit/25fb70e7f527a91568adaef576570289083f243bCNA: GitHub_M · x_refsource_MISC
- https://github.com/tsparticles/tsparticles/commit/25fb70e7f527a91568adaef576570289083f243b[email protected]
- https://github.com/tsparticles/tsparticles/pull/5875[email protected]
- https://github.com/tsparticles/tsparticles/security/advisories/GHSA-4p8p-pjpq-2w7h[email protected]
For agents and automation
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