CVE-2026-108714

waiting for further signals

EUVD-2026-96988 ↗

no check availablenot proven exploitable

cve.orgpublic pockev

modelcontextprotocol kotlin-sdk <= 0.15.0

CWE-770 Allocation of Resources Without Limits or Throttling

ETK-2026-1247, 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

9d 14h 40msince last run

1h 11mAI analysis

timeline

0 = cve.org publication

trigger signal (cve.org) +0hwaiting for further signals+2h47m

+2h

+4h

+6h

+8h

+10h

+12h

description

MCP Kotlin SDK through 0.15.0 does not set a maximum WebSocket frame size when configuring Application.mcpWebSocket. A remote client able to connect to the affected WebSocket service may exhaust server memory and cause denial of service.

mitigation

Configure a maximum accepted WebSocket frame size for affected MCP Kotlin SDK deployments and restrict access to the WebSocket endpoint to trusted clients. Upgrade when a fixed release is published; no fixed version is recorded.

check

exploit

automation

–

auth required

EPSS

0.36%28th percentile

agent run time

1h 11m

cve.org record, t = 0

2026-10-11 12:19Z

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.

2026-10-11 12:19Z
cve_org: trigger signal, started the run
https://www.cve.org/CVERecord?id=CVE-2026-108714

this entry in the feed

GET /api/v1/feed/CVE-2026-108714

{
  "etk_id": "ETK-2026-1247",
  "cve_id": "CVE-2026-108714",
  "display_id": "CVE-2026-108714",
  "ghsa_id": null,
  "euvd_id": "EUVD-2026-96988",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Unbounded WebSocket frame allocation in MCP Kotlin SDK",
  "summary": "MCP Kotlin SDK through 0.15.0 does not set a maximum WebSocket frame size when configuring Application.mcpWebSocket. A remote client able to connect to the affected WebSocket service may exhaust server memory and cause denial of service.",
  "mitigation": "Configure a maximum accepted WebSocket frame size for affected MCP Kotlin SDK deployments and restrict access to the WebSocket endpoint to trusted clients. Upgrade when a fixed release is published; no fixed version is recorded.",
  "vendor": "modelcontextprotocol",
  "product": "kotlin-sdk",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, <= 0.15.0"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "kotlin-sdk",
      "purl": null
    }
  ],
  "cwes": [
    770
  ],
  "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": 0.0036,
  "epss_percentile": 0.2808,
  "epss_asof": "2026-10-20",
  "automation": "deterministic",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 70.88440203333333,
  "t0_at": "2026-10-11T12:19:27.291000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-11T12:19:27.291000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-11T12:19:27.291000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-108714"
    }
  }
}

published 2026-10-11 13:55Z
last change 2026-10-21 05:31Z

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