ETK-2026-3943Zero's internal tracking ID, independent of the CVE number.

{
  "etk_id": "ETK-2026-3943",
  "cve_id": null,
  "display_id": "ETK-2026-3943",
  "ghsa_id": "GHSA-3rp8-rxj8-mvjw",
  "euvd_id": null,
  "status": "published",
  "anchor_state": "awaiting_cve",
  "title": "Integer overflow in aiohttp WebSocket size enforcement",
  "summary": "aiohttp installations using the C WebSocket reader before 3.14.4 can fail to enforce the configured maximum WebSocket message size. An attacker able to send WebSocket traffic to an affected application may cause excessive memory consumption; the issue requires the C extension to be in use.",
  "mitigation": "Upgrade aiohttp to version 3.14.4. If an upgrade cannot be applied immediately, disable aiohttp extensions with `AIOHTTP_NO_EXTENSIONS=1` to use the unaffected Python reader.",
  "vendor": "pip",
  "product": "aiohttp",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 3.14.3"
      ],
      "ecosystem": "pip",
      "fixed_versions": [
        "3.14.4"
      ],
      "package_name": "aiohttp",
      "purl": "pkg:pypi/aiohttp"
    }
  ],
  "cwes": [
    770
  ],
  "cvss_score": 7.5,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 8.370758633333333,
  "t0_at": null,
  "signals": {
    "trigger_signal": {
      "at": "2026-11-08T18:20:46+00:00",
      "days": -2.517426253564815,
      "is_lower_bound": true,
      "measured_at": "2026-11-11T06:45:51.670484+00:00",
      "url": "https://github.com/aio-libs/aiohttp/security/advisories/GHSA-3rp8-rxj8-mvjw"
    }
  }
}