Vulnerability details
CVE-2026-76892
tsparticles mcp-servertsparticles tsparticles
tsParticles: Malformed JSON requests can terminate the @tsparticles/mcp-server HTTP process
CVSS 4.0
8.7High
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.7High | 4.0 | CVEProject cvelistV5 (CNA) (GitHub_M) | 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 |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| tsparticles | mcp-server | < 4.3.1 | CVEProject cvelistV5 (CNA) |
| tsparticles | tsparticles | < 4.3.1 | CVEProject cvelistV5 (CNA) |
References and advisories
3- https://github.com/tsparticles/tsparticles/pull/5875 x_refsource_MISC
- https://github.com/tsparticles/tsparticles/commit/25fb70e7f527a91568adaef576570289083f243b x_refsource_MISC
- https://github.com/tsparticles/tsparticles/security/advisories/GHSA-4p8p-pjpq-2w7h x_refsource_CONFIRM
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Details
- Published
- 2026-11-05
- Last updated
- 2026-11-05
- State
- Published
- Assigner (CNA)
- GitHub_M
Exploit prediction (EPSS)
0.29%
Probability of exploitation in 30 days
21.8%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- Proof of concept
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-248Uncaught Exception