CVE-2026-95859

{
  "etk_id": "ETK-2026-1787",
  "cve_id": "CVE-2026-95859",
  "display_id": "CVE-2026-95859",
  "ghsa_id": "GHSA-g3g5-x568-qvqx",
  "euvd_id": "EUVD-2026-102898",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Unbounded memory growth in rust-libp2p Gossipsub",
  "summary": "rust-libp2p releases before 0.49.5 mishandle Gossipsub GRAFT topic state. An unauthenticated peer that can reach a Gossipsub listener can consume process memory over time and potentially deny service.",
  "mitigation": "Upgrade rust-libp2p to version 0.49.5 or later. Until upgraded, restrict untrusted network access to Gossipsub listeners.",
  "vendor": "libp2p",
  "product": "rust-libp2p",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "< 0.49.4"
      ],
      "ecosystem": "rust",
      "fixed_versions": [
        "0.49.5"
      ],
      "package_name": "libp2p-gossipsub",
      "purl": "pkg:cargo/libp2p-gossipsub"
    }
  ],
  "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": 0.0029,
  "epss_percentile": 0.2042,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 18.6450374,
  "t0_at": "2026-10-16T15:19:04.504000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-16T16:21:39.710569+00:00",
      "days": 0.04346303899305556,
      "is_lower_bound": false,
      "measured_at": "2026-10-16T15:19:04.504000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-16T15:19:04.504000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-16T15:19:04.504000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-95859"
    }
  }
}