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Vulnerability Database · crates.io · Package report

yaml-rust: vulnerability history, versions and safety

yaml-rust is a package in the crates.io ecosystem. Vulert records 4 vulnerabilities for it across 14 releases, from Sep 2018 to Mar 2024. Each vulnerability names the versions it affects, the fixed version to move to, and a workaround where no fix has been published.

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4 vulnerabilities recorded H1 U3
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1 with no fix published

No patched version yet — these are the ones to plan around.

See the unfixed vulnerabilities →
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0 in the last 12 months

Nothing new recorded in the last year.

See the disclosure history →
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0 malicious-package vulnerabilities

No published version shipped hostile code.

See all yaml-rust vulnerabilities

Vulert verdict on yaml-rust 0.4.5 i

Updated on 23 Oct 2026

Careful: 0.4.5 has 1 known vulnerability, and 1 has no fix yet. Use an earlier safe version, or the workaround listed for each one.

Package health score 60/100
  • Security Some issues to review
  • Maintenance Slowing
  • Popularity Widely used
  • Community Quiet

The current release has a vulnerability with no published fix, which caps this score.

What to do: Pin an earlier, unaffected release if you can, and apply the workaround each vulnerability lists until a fix is published. No fix yet: Vulert alerts you the moment one is published. Monitor it with Vulert →

  • Current release 0.4.5 — affected i
  • Vulnerabilities on record 4 over 5 years · 0 in the last year i
  • Latest disclosure 20 Mar 2024 i
  • Highest CVSS 7.5 i
  • With no published fix 1 i
  • Depended on by 1,943 packages i
  • Stars 647 i
  • OpenSSF scorecard 1/10 i
  • Last release 69 months ago i
  • Licence Apache-2.0 OR MIT i

Version list, release dates, licence and dependants published by crates.io, refreshed 23 Oct 2026. Licence information is not legal advice.

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01 Versions

Which versions are affected

Every version Vulert tracks for yaml-rust, newest first, with the vulnerabilities recorded against each one. A version showing none has no vulnerability in the Vulert database — open it for the full picture on that release.

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Version Released Vulert vulnerabilities Licence Fix published Details
0.4.5 03 Jan 2021 U1 Apache-2.0 OR MIT No Details →
0.4.4 01 Jun 2020 U1 Apache-2.0 OR MIT No Details →
0.4.3 07 Mar 2019 U1 Apache-2.0 OR MIT No Details →
0.4.2 15 Sep 2018 U1 Apache-2.0 OR MIT No Details →
0.4.1 15 Sep 2018 U1 Apache-2.0 OR MIT No Details →
0.4.0 22 Nov 2017 H1 U3 Apache-2.0 OR MIT No Details →
0.3.5 25 Nov 2016 H1 U3 Apache-2.0 OR MIT No Details →
0.3.4 14 Oct 2016 H1 U3 Apache-2.0 OR MIT No Details →
0.3.3 01 Jun 2016 H1 U3 Apache-2.0 OR MIT No Details →
0.3.2 22 Mar 2016 H1 U3 Apache-2.0 OR MIT No Details →
0.3.0 01 Jan 2016 H1 U3 MIT No Details →
0.2.2 23 Sep 2015 H1 U3 MIT No Details →
0.2.1 02 Jul 2015 H1 U3 MIT No Details →
0.2.0 04 Jun 2015 H1 U3 — No Details →

All 14 versions Vulert tracks for this package. Severity counts are the vulnerabilities recorded against that exact release.

02 Disclosure history

How often vulnerabilities are recorded

  • 2018 2
  • 2021 1
  • 2024 1

Counted by the year Vulert recorded each vulnerability — the same date the table below shows as disclosed. 0 of the 4 were recorded in the last 12 months.

03 Vulnerabilities

Recorded vulnerabilities for yaml-rust

The 4 most severe of 4 vulnerabilities recorded for this package

Search all 4 in the database →
Vulnerability Severity Fixed version ↓ Disclosed ↓
CVE-2018-20993: Uncontrolled Recursion in rust-yaml 7.5 high 0.4.1 17 Sep 2018
CVE-2018-20993: yaml-rust - Uncontrolled recursion leads to abort in deserialization 7.5 high 0.4.1 17 Sep 2018
CVE-2018-20993: Uncontrolled Recursion in rust-yaml 7.5 high 0.4.1 25 Aug 2021
Unmaintained yaml-rust package N/A unrated No fix published 20 Mar 2024

Vulnerability wrong, a fix missing, or a package we should cover? Report it and we will fix the record. Report Vulnerability Provide Feedback

Updated: 23/Oct/2026 · Vulnerabilities in our DB: 524315

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Questions

About yaml-rust

Is yaml-rust safe to use?

Vulert records 4 vulnerabilities for yaml-rust in crates.io: 0 critical, 1 high, 0 medium and 0 low, plus 3 not yet rated. 1 of them has no published fix yet, so that is the one to avoid or mitigate.

What is yaml-rust's Vulert package health score?

Vulert scores yaml-rust 60/100, which reads as usable, but worth attention. The score weighs the vulnerability record (40), maintenance and release cadence (25), adoption from dependents and stars (20) and community signals such as the OpenSSF scorecard and forks (15). The current release has a vulnerability with no published fix, which caps this score.

Is the latest version of yaml-rust affected?

Yes. 0.4.5, the version you would install today, has 1 known vulnerability, and 1 has no published fix yet. Use an earlier unaffected release, or the workaround each vulnerability lists.

Which version of yaml-rust should I use?

0.4.5 is the version Vulert recommends for the affected releases. The version table above lists every release with the vulnerabilities recorded against it, so you can confirm the range you actually run.

How many vulnerabilities does yaml-rust have?

4 vulnerabilities are recorded for yaml-rust in the crates.io ecosystem: 0 critical, 1 high, 0 medium and 0 low, plus 3 not yet rated. The ledger on this page lists the same counts next to the date of the most recent disclosure.

How often are new yaml-rust vulnerabilities disclosed?

0 vulnerabilities were recorded for yaml-rust in the last 12 months, and the oldest entry in this database dates to 17 Sep 2018. Recency matters more than a lifetime total: it shows how actively new issues are being disclosed for the package you are considering.

Which versions of yaml-rust are affected?

Each vulnerability on this page lists the affected version range and the fixed version to move to. Open the vulnerability for the version you actually run — fixes are specific to a release line, not to the package as a whole.

How do I monitor yaml-rust for upcoming vulnerabilities?

Upload the manifest or SBOM for your application at vulert.com/scanner and Vulert keeps checking the yaml-rust version you actually run against new disclosures, then alerts you when one affects it. There is no installation and no source-code access required.