GHSA-x8jh-xj3x-gx3c
`fast-float` has multiple soundness issues
GHSA-x8jh-xj3x-gx3c is a low vulnerability (CVSS 2.7) in fast-float, published October 31, 2024. No source lists public exploit code. No source names a fixed version.
- Severity
- 2.7 LowCVSS 4.0, GitHub Advisories
- Exploit chance
- UnscoredNo EPSS score yet
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
- No fix listedNo source names one
Description
fast-float contains multiple soundness issues:
- Undefined behavior when checking input length, which has been merged but no package pubished.
- Many functions marked as safe with non-local safety guarantees
The library is also unmaintained.
Alternatives
For 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 into libcore. When requiring direct parsing from bytes and/or partial parsers, the fast-float2 fork of fast-float containing these security patches and reduces overall usage of unsafe.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
Affected packages
| Package | Affected | Fixed |
|---|---|---|
fast-floatcrates.io | through 0.2.0 | None known |
fast-floatcrates.io | 0.0.0-0 and later | None known |
What each source reports
GitHub Advisories Score used
`fast-float` has multiple soundness issues
fast-float contains multiple soundness issues:
- Undefined behavior when checking input length, which has been merged but no package pubished.
- Many functions marked as safe with non-local safety guarantees
The library is also unmaintained.
Alternatives
For 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 into libcore. When requiring direct parsing from bytes and/or partial parsers, the fast-float2 fork of fast-float containing these security patches and reduces overall usage of unsafe.
- Record
GHSA-x8jh-xj3x-gx3c- CVSS 4.0
- 2.7 Low
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U - Updated
- 2026-11-02
OSV
`fast-float` has multiple soundness issues
fast-float contains multiple soundness issues:
- Undefined behavior when checking input length, which has been merged but no package pubished.
- Many functions marked as safe with non-local safety guarantees
The library is also unmaintained.
Alternatives
For 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 into libcore. When requiring direct parsing from bytes and/or partial parsers, the fast-float2 fork of fast-float containing these security patches and reduces overall usage of unsafe.
- Record
GHSA-x8jh-xj3x-gx3c- CVSS 4.0
- 2.7 Low
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U - Updated
- 2026-11-02
OSVRUSTSEC-2024-0379No score
Multiple soundness issues
fast-float contains multiple soundness issues:
- Undefined behavior when checking input length, which has been merged but no package pubished.
- Many functions marked as safe with non-local safety guarantees
The library is also unmaintained.
Alternatives
For 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 into libcore. When requiring direct parsing from bytes and/or partial parsers, the fast-float2 fork of fast-float containing these security patches and reduces overall usage of unsafe.
- Record
RUSTSEC-2024-0379- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | GitHub Advisories, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.