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Vulnerability Database · crates.io · Package report

proc-macro-error2: vulnerability history, versions and safety

proc-macro-error2 is a package in the crates.io ecosystem. Vulert records 1 vulnerability for it across 5 releases, first recorded in Jun 2026. 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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1 vulnerabilities recorded U1
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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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1 in the last 12 months

Most recent disclosure 07 Jun 2026.

See the disclosure history →
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0 malicious-package vulnerabilities

No published version shipped hostile code.

See all proc-macro-error2 vulnerabilities

Vulert verdict on proc-macro-error2 2.0.1 i

Updated on 23 Oct 2026

Careful: 2.0.1 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 56/100
  • Security Minor issues
  • Maintenance Maintaining
  • 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 2.0.1 — affected i
  • Vulnerabilities on record 1 over 1 year · 1 in the last year i
  • Latest disclosure 07 Jun 2026 i
  • Highest CVSS n/a i
  • With no published fix 1 i
  • Stars 15 i
  • Last release 25 months ago i
  • Licence Apache-2.0 OR MIT i
  • Similar names proc_macro_error 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 proc-macro-error2, 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
2.0.1 06 Sep 2024 U1 Apache-2.0 OR MIT No Details →
2.0.0 05 Sep 2024 U1 Apache-2.0 OR MIT No Details →
2.0.0-pre.1 05 Sep 2024 U1 Apache-2.0 OR MIT No Details →
0.0.2 27 Aug 2023 U1 Apache-2.0 OR MIT No Details →
0.0.1 26 Aug 2023 U1 Apache-2.0 OR MIT No Details →

All 5 versions Vulert tracks for this package. Severity counts are the vulnerabilities recorded against that exact release.

02 Disclosure history

How often vulnerabilities are recorded

  • 2026 1

Counted by the year Vulert recorded each vulnerability — the same date the table below shows as disclosed. 1 of the 1 were recorded in the last 12 months.

03 Vulnerabilities

Recorded vulnerabilities for proc-macro-error2

The 1 most severe of 1 vulnerabilities recorded for this package

Search all 1 in the database →
Vulnerability Severity Fixed version ↓ Disclosed ↓
Unmaintained Package Alert: proc-macro-error2 Vulnerability N/A unrated No fix published 07 Jun 2026

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 proc-macro-error2

Is proc-macro-error2 safe to use?

Vulert records 1 vulnerabilities for proc-macro-error2 in crates.io: 0 critical, 0 high, 0 medium and 0 low, plus 1 not yet rated. 1 of them has no published fix yet, so that is the one to avoid or mitigate.

What is proc-macro-error2's Vulert package health score?

Vulert scores proc-macro-error2 56/100, 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 proc-macro-error2 affected?

Yes. 2.0.1, 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 proc-macro-error2 should I use?

2.0.1 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 proc-macro-error2 have?

1 vulnerability is recorded for proc-macro-error2 in the crates.io ecosystem: 0 critical, 0 high, 0 medium and 0 low, plus 1 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 proc-macro-error2 vulnerabilities disclosed?

1 vulnerability was recorded for proc-macro-error2 in the last 12 months, and the oldest entry in this database dates to 07 Jun 2026. 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 proc-macro-error2 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 proc-macro-error2 for upcoming vulnerabilities?

Upload the manifest or SBOM for your application at vulert.com/scanner and Vulert keeps checking the proc-macro-error2 version you actually run against new disclosures, then alerts you when one affects it. There is no installation and no source-code access required.