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    RUSTSEC-2026-0323 (GHSA-96F6-R43R-8C24)

    Vulnerability from osv_rustsec – Published: 2026-10-02 12:00 – Updated: 2026-10-02 20:27 – Source website
    VLAI
    Summary
    fd_readdir copies uninitialized struct padding into guest memory
    Details

    This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-96f6-r43r-8c24 For more information see the GitHub-hosted security advisory.

    Severity
    2.1 (Low)
    CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
    References
    To clipboard 

    {
  "affected": [
    {
      "database_specific": {
        "categories": [],
        "cvss": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "wasmtime-wasi",
        "purl": "pkg:cargo/wasmtime-wasi"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "36.0.17"
            },
            {
              "introduced": "37.0.0"
            },
            {
              "fixed": "48.0.4"
            },
            {
              "introduced": "49.0.0"
            },
            {
              "fixed": "49.0.2"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "GHSA-96f6-r43r-8c24"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "This is an entry in the RustSec database for the Wasmtime security advisory\nlocated at\nhttps://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-96f6-r43r-8c24\nFor more information see the GitHub-hosted security advisory.",
  "id": "RUSTSEC-2026-0323",
  "modified": "2026-10-02T20:27:46Z",
  "published": "2026-10-02T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/wasmtime-wasi"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2026-0323.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com/bytecodealliance/wasmtime/pull/14487"
    }
  ],
  "related": [],
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "fd_readdir copies uninitialized struct padding into guest memory"
}