{
  "cveId": "CVE-2026-27572",
  "url": "https://patchblox.com/security/cve/CVE-2026-27572",
  "summary": "CVE-2026-27572 is fixed in rust-wasmtime on 1 platform by DEBIAN-CVE-2026-27572 (version 36.0.6\u002Bdfsg-1), released February 24, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "rust-wasmtime: Wasmtime is a runtime for WebAssembly",
  "description": "Wasmtime is a runtime for WebAssembly. Prior to versions 24.0.6, 36.0.6, 4.0.04, 41.0.4, and 42.0.0, Wasmtime\u0027s implementation of the \u0060wasi:http/types.fields\u0060 resource is susceptible to panics when too many fields are added to the set of headers. Wasmtime\u0027s implementation in the \u0060wasmtime-wasi-http\u0060 crate is backed by a data structure which panics when it reaches excessive capacity and this condition was not handled gracefully in Wasmtime. Panicking in a WASI implementation is a Denial of Service vector for embedders and is treated as a security vulnerability in Wasmtime. Wasmtime 24.0.6, 36.0.6, 40.0.4, 41.0.4, and 42.0.0 patch this vulnerability and return a trap to the guest instead of panicking. There are no known workarounds at this time. Embedders are encouraged to update to a patched version of Wasmtime.",
  "published": "2026-02-24T22:16:32Z",
  "severity": "high",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00519,
  "epssPercentile": 0.4434,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "rust-wasmtime",
      "release": "Debian 14",
      "fixedVersion": "36.0.6\u002Bdfsg-1",
      "fix": "DEBIAN-CVE-2026-27572",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-27572",
      "released": "2026-02-24T22:16:32Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}