{"id":"GHSA-x8jh-xj3x-gx3c","aliases":["RUSTSEC-2024-0379"],"url":"https://o3.security/vulnerability/GHSA-x8jh-xj3x-gx3c","summary":"`fast-float` has multiple soundness issues","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.\n","published":"2024-11-12T20:48:39Z","modified":"2026-09-10T03:50:21.159785115Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"crates.io","name":"fast-float","fixedVersion":null}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/aldanor/fast-float-rust/issues/28"},{"type":"WEB","url":"https://github.com/aldanor/fast-float-rust/issues/35"},{"type":"WEB","url":"https://github.com/aldanor/fast-float-rust/issues/37"},{"type":"PACKAGE","url":"https://github.com/aldanor/fast-float-rust"},{"type":"WEB","url":"https://rustsec.org/advisories/RUSTSEC-2024-0379.html"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-10T03:50:21.159785115Z"}}