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Vulnerability Database · crates.io · Package report

crayon: vulnerability history, versions and safety

crayon is a package in the crates.io ecosystem. Vulert records 5 vulnerabilities for it across 17 releases, from Aug 2020 to Apr 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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5 vulnerabilities recorded H2 U3
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5 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 crayon vulnerabilities

Vulert verdict on crayon 0.7.1 i

Updated on 23 Oct 2026

Careful: 0.7.1 has 5 known vulnerabilities, and 5 have no fix yet. Use an earlier safe version, or the workaround listed for each one.

Package health score 45/100
  • Security Some issues to review
  • Maintenance Slowing
  • Popularity Little adoption
  • Community Inactive

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 0.7.1 — affected i
  • Vulnerabilities on record 5 over 3 years · 0 in the last year i
  • Latest disclosure 05 Apr 2024 i
  • Highest CVSS 8.1 i
  • With no published fix 5 i
  • Stars 181 i
  • OpenSSF scorecard 1/10 i
  • Last release 94 months ago i
  • Licence Apache-2.0 i
  • Similar names rayon 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 crayon, 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
0.7.1 14 Dec 2018 H2 U3 Apache-2.0 No Details →
0.7.0 21 Nov 2018 H2 U3 Apache-2.0 No Details →
0.6.0 18 Sep 2018 H2 U3 Apache-2.0 No Details →
0.5.1 01 Sep 2018 H1 U2 Apache-2.0 No Details →
0.5.0 24 Aug 2018 H1 U2 Apache-2.0 No Details →
0.4.0 03 Apr 2018 H1 U2 Apache-2.0 No Details →
0.3.0 27 Feb 2018 H1 U2 Apache-2.0 No Details →
0.2.1 02 Feb 2018 H1 U2 Apache-2.0 No Details →
0.2.0 30 Jan 2018 H1 U2 Apache-2.0 No Details →
0.1.0 15 Dec 2017 H1 U2 Apache-2.0 No Details →
0.0.7 14 Dec 2017 H1 U2 Apache-2.0 No Details →
0.0.6 12 Dec 2017 H1 U2 Apache-2.0 No Details →
0.0.5 30 Nov 2017 H1 U2 Apache-2.0 No Details →
0.0.4 27 Sep 2017 H1 U2 Apache-2.0 No Details →
0.0.3 19 Sep 2017 H1 U2 Apache-2.0 No Details →
0.0.2 17 Aug 2017 H1 U2 Apache-2.0 No Details →
0.0.1 07 Mar 2017 H1 U2 Apache-2.0 No Details →

All 17 versions Vulert tracks for this package. Severity counts are the vulnerabilities recorded against that exact release.

02 Disclosure history

How often vulnerabilities are recorded

  • 2020 2
  • 2021 1
  • 2024 2

Counted by the year Vulert recorded each vulnerability — the same date the table below shows as disclosed. 0 of the 5 were recorded in the last 12 months.

03 Vulnerabilities

Recorded vulnerabilities for crayon

The 5 most severe of 5 vulnerabilities recorded for this package

Search all 5 in the database →
Vulnerability Severity Fixed version ↓ Disclosed ↓
CVE-2020-35889: Memory Safety Violation in crayon 8.1 high No fix published 31 Aug 2020
CVE-2020-35889: Memory Safety Violation in crayon 8.1 high No fix published 31 Aug 2020
CVE-2020-35889: Memory safety violation in crayon 8.1 high No fix published 25 Aug 2021
ObjectPool vulnerability in crayon 7.5 high No fix published 05 Apr 2024
Uninitialized Memory in ObjectPool when Freeing Objects in Crayon N/A unrated No fix published 27 Feb 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 crayon

Is crayon safe to use?

Vulert records 5 vulnerabilities for crayon in crates.io: 0 critical, 2 high, 0 medium and 0 low, plus 3 not yet rated. 5 of them have no published fix yet, so those are the ones to avoid or mitigate.

What is crayon's Vulert package health score?

Vulert scores crayon 45/100, which reads as risky. 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 crayon affected?

Yes. 0.7.1, the version you would install today, has 5 known vulnerabilities, and 5 has no published fix yet. Use an earlier unaffected release, or the workaround each vulnerability lists.

Which version of crayon should I use?

0.7.1 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 crayon have?

5 vulnerabilities are recorded for crayon in the crates.io ecosystem: 0 critical, 2 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 crayon vulnerabilities disclosed?

0 vulnerabilities were recorded for crayon in the last 12 months, and the oldest entry in this database dates to 31 Aug 2020. 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 crayon 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 crayon for upcoming vulnerabilities?

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