CVE-2026-115893

{
  "etk_id": "ETK-2026-2280",
  "cve_id": "CVE-2026-115893",
  "display_id": "CVE-2026-115893",
  "ghsa_id": "GHSA-mghf-wjfp-p5xm",
  "euvd_id": "EUVD-2026-109188",
  "status": "published",
  "anchor_state": "anchored",
  "title": "AArch64 sandbox escape from Wasmtime branch miscompilation",
  "summary": "Wasmtime deployments on AArch64 that use the default Cranelift backend are affected by a control-flow compilation flaw. An attacker who can submit a WebAssembly module may be able to execute outside the intended Wasm sandbox.",
  "mitigation": "Upgrade wasmtime to 36.0.19, 48.0.7, 49.0.4 or later.",
  "vendor": "rust",
  "product": "wasmtime",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<36.0.19",
        ">=37.0.0",
        "<48.0.7",
        ">=49.0.0",
        "<49.0.4"
      ],
      "ecosystem": "rust",
      "fixed_versions": [
        "36.0.19",
        "48.0.7",
        "49.0.4"
      ],
      "package_name": "wasmtime",
      "purl": "pkg:cargo/wasmtime"
    }
  ],
  "cwes": [
    691
  ],
  "cvss_score": 9.9,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 21.872882866666668,
  "t0_at": "2026-10-23T21:29:33.917000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-19T19:21:02+00:00",
      "days": -4.089258298611111,
      "is_lower_bound": false,
      "measured_at": "2026-10-23T21:29:33.917000+00:00",
      "url": "https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-mghf-wjfp-p5xm"
    }
  }
}