{
  "cveId": "CVE-2026-34983",
  "url": "https://patchblox.com/security/cve/CVE-2026-34983",
  "summary": "CVE-2026-34983 is fixed in rust-wasmtime on 1 platform by DEBIAN-CVE-2026-34983 (version 36.0.7\u002Bdfsg-1), released April 9, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "rust-wasmtime: Wasmtime is a runtime for WebAssembly",
  "description": "Wasmtime is a runtime for WebAssembly. In 43.0.0, cloning a wasmtime::Linker is unsound and can result in use-after-free bugs. This bug is not controllable by guest Wasm programs. It can only be triggered by a specific sequence of embedder API calls made by the host. Specifically, the following steps must occur to trigger the bug clone a wasmtime::Linker, drop the original linker instance, use the new, cloned linker instance, resulting in a use-after-free. This vulnerability is fixed in 43.0.1.",
  "published": "2026-04-09T19:16:24Z",
  "severity": "medium",
  "cvss": 5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H",
  "epss": 0.00121,
  "epssPercentile": 0.01948,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "rust-wasmtime",
      "release": "Debian 14",
      "fixedVersion": "36.0.7\u002Bdfsg-1",
      "fix": "DEBIAN-CVE-2026-34983",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-34983",
      "released": "2026-04-09T19:16:24Z"
    }
  ],
  "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"
  }
}