CVE-2026-76892

HIGH
MEDIUM Priority: 0.03 BB Relevance: 77/100
Published: 2026-11-04 Modified: 2026-11-06 First seen: 2026-11-04 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: X
AT: None
VC: None
VI: None
VA: High

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.

Weakness Classification (1)

Affected Software (4)

VendorProductVersion
@tsparticles mcp-server < 4.3.1
@tsparticles mcp-server < 4.3.1
tsparticles tsparticles < 4.3.1
tsparticles tsparticles < 4.3.1

Bug Bounty Relevance

77 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

8.7 / 10.0 v4.0
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

EPSS — Exploitation Probability

0.29%
Raw Score 0.002910
Percentile 22.0%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00291
2026-11-12
0.00291
2026-11-10
0.00291
2026-11-09
0.00291
2026-11-08
0.00291
2026-11-07
0.00291
2026-11-06
0.00291
2026-11-05
0.00291

Intelligence Sources

mitre ref →
nvd ref →