{
  "affected": [
    {
      "database_specific": {
        "categories": [],
        "cvss": null,
        "informational": "unsound"
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "fast-float",
        "purl": "pkg:cargo/fast-float"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "GHSA-x8jh-xj3x-gx3c"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "`fast-float` contains multiple soundness issues:\n\n 1. [Undefined behavior when checking input length](https://github.com/aldanor/fast-float-rust/issues/28), which has been merged but no package [pubished](https://github.com/aldanor/fast-float-rust/issues/35).\n 1. [Many functions marked as safe with non-local safety guarantees](https://github.com/aldanor/fast-float-rust/issues/37)\n\nThe library is also unmaintained.\n\n## Alternatives\n\nFor quickly parsing floating-point numbers third-party crates are generally no longer needed. A fast float parsing algorithm by the author of `lexical` has been [merged](https://github.com/rust-lang/rust/pull/86761) into libcore. When requiring direct parsing from bytes and/or partial parsers, the [`fast-float2`](https://crates.io/crates/fast-float2) fork of `fast-float` containing these security patches and reduces overall usage of unsafe.",
  "id": "RUSTSEC-2024-0379",
  "modified": "2025-10-28T06:02:18Z",
  "published": "2024-10-31T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/fast-float"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2024-0379.html"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/aldanor/fast-float-rust/issues/35"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/aldanor/fast-float-rust/issues/28"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/aldanor/fast-float-rust/issues/37"
    }
  ],
  "related": [],
  "severity": [],
  "summary": "Multiple soundness issues"
}