CVE-2026-103472

validated

GHSA-x9gv-qwcx-36wm ↗EUVD-2026-90203 ↗

check availablenot proven exploitable

cve.orgpublic pockev

Corvusoft restbed <= 5.0.0

CWE-770 Allocation of Resources Without Limits or Throttling

ETK-2026-140, 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

+2h14mTTV

29mAI analysis

Check if you are vulnerable

timeline

0 = trigger signal

trigger signal (cve.org) +0hcheck available+2h14magent stopped

+1h

+2h

description

Corvusoft restbed through 5.0.0 does not adequately bound memory use for WebSocket message payloads. An unauthenticated remote attacker able to reach a WebSocket service can exhaust server memory and crash the process.

mitigation

Restrict access to WebSocket endpoints and enforce connection, request-size, and rate limits at a reverse proxy or network edge. Monitor affected services for abnormal memory consumption; no upstream fixed version is recorded.

check

available

exploit

automation

contextual

auth required

EPSS

0.44%36th percentile

agent run time

29m

cve.org record, t = 0

2026-09-30 17:22Z

Δ to public poc

–

Δ to kev

–

outcome

Mechanism verified: the exploit fired on the vulnerable build and stayed silent on the patched one, but the server it ran against was ours, so no check ships for it.

source signals

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

2026-09-30 17:22Z
cve_org: trigger signal, started the run
https://www.cve.org/CVERecord?id=CVE-2026-103472

this entry in the feed

GET /api/v1/feed/CVE-2026-103472

{
  "etk_id": "ETK-2026-140",
  "cve_id": "CVE-2026-103472",
  "display_id": "CVE-2026-103472",
  "ghsa_id": "GHSA-x9gv-qwcx-36wm",
  "euvd_id": "EUVD-2026-90203",
  "status": "published",
  "anchor_state": "anchored",
  "title": "WebSocket memory exhaustion in Corvusoft restbed",
  "summary": "Corvusoft restbed through 5.0.0 does not adequately bound memory use for WebSocket message payloads. An unauthenticated remote attacker able to reach a WebSocket service can exhaust server memory and crash the process.",
  "mitigation": "Restrict access to WebSocket endpoints and enforce connection, request-size, and rate limits at a reverse proxy or network edge. Monitor affected services for abnormal memory consumption; no upstream fixed version is recorded.",
  "vendor": "Corvusoft",
  "product": "restbed",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, <= 5.0.0"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "restbed",
      "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": 0.0044,
  "epss_percentile": 0.3699,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "mechanism_verified",
  "exploit": false,
  "pipeline_minutes": 29.066022783333334,
  "t0_at": "2026-09-30T17:22:39.306000+00:00",
  "signals": {
    "check": {
      "at": "2026-09-30T19:36:56.695682+00:00",
      "days": 0.09325682502314815,
      "is_lower_bound": false,
      "measured_at": "2026-09-30T17:22:39.306000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-09-30T17:22:39.306000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-09-30T17:22:39.306000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-103472"
    }
  }
}

published 2026-09-30 19:07Z
last change 2026-10-21 07:05Z

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