CVE-2026-76892

waiting for further signals

GHSA-4p8p-pjpq-2w7h ↗

no check availablenot proven exploitable

cve.orgpublic pockev

tsparticles < 4.3.1

fixed in 4.3.1

CWE-248 Uncaught Exception

ETK-2026-3548, permanent identifier

cvss8.7cna vendorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

1h 28msince last run

25mAI analysis

timeline

0 = cve.org publication

trigger signal (cve.org) +0hwaiting for further signals+1h02m

+2h

+4h

+6h

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+12h

description

tsParticles MCP server HTTP mode before 4.3.1 can terminate when it receives malformed JSON at its request handler. An unauthenticated remote attacker can disrupt availability if they can reach the exposed HTTP service.

mitigation

Upgrade tsparticles and mcp-server to version 4.3.1 or later. Until upgraded, restrict network access to the MCP HTTP endpoint to trusted clients.

fixed in 4.3.1

check

exploit

automation

–

auth required

EPSS

–

agent run time

25m

cve.org record, t = 0

2026-11-04 22:14Z

Δ to public poc

–

Δ to kev

–

outcome

No artifact: an exploit or check was attempted but could not be produced at this moment.

source signals

Public signals that triggered or updated the pipeline. These are inputs for the deltas above.

2026-11-04 22:14Z
cve_org: trigger signal, started the run
https://www.cve.org/CVERecord?id=CVE-2026-76892

this entry in the feed

GET /api/v1/feed/CVE-2026-76892

{
  "etk_id": "ETK-2026-3548",
  "cve_id": "CVE-2026-76892",
  "display_id": "CVE-2026-76892",
  "ghsa_id": "GHSA-4p8p-pjpq-2w7h",
  "euvd_id": null,
  "status": "published",
  "anchor_state": "anchored",
  "title": "Malformed JSON denial of service in tsParticles MCP server",
  "summary": "tsParticles MCP server HTTP mode before 4.3.1 can terminate when it receives malformed JSON at its request handler. An unauthenticated remote attacker can disrupt availability if they can reach the exposed HTTP service.",
  "mitigation": "Upgrade tsparticles and mcp-server to version 4.3.1 or later. Until upgraded, restrict network access to the MCP HTTP endpoint to trusted clients.",
  "vendor": "tsparticles",
  "product": "tsparticles",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "< 4.3.1"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "4.3.1"
      ],
      "package_name": "tsparticles",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        "< 4.3.1"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "4.3.1"
      ],
      "package_name": "mcp-server",
      "purl": null
    }
  ],
  "cwes": [
    248
  ],
  "cvss_score": 8.7,
  "cvss_src": "cna_vendor",
  "cvss_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",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "deterministic",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 25.169666066666668,
  "t0_at": "2026-11-04T22:14:13.918000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-11-04T22:14:13.918000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-04T22:14:13.918000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-76892"
    }
  }
}

published 2026-11-04 22:50Z
last change 2026-11-04 23:16Z

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