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Vulnerability Database · npm · Package report

deep-extend: vulnerability history, versions and safety

deep-extend is a package in the npm ecosystem. Vulert records 1 vulnerability for it across 19 releases, first recorded in Oct 2018. 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 C1
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0 with no fix published

Every vulnerability has a patched version to move to.

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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 deep-extend vulnerabilities

Vulert verdict on deep-extend 0.6.0 i

Updated on 23 Oct 2026

Good news: 0.6.0, the version you would install today, has no known vulnerabilities. Older releases do — the table below lists all 1.

Package health score 58/100
  • Security Some issues to review
  • Maintenance Slowing
  • Popularity Widely used
  • Community Inactive

What to do: Stay on 0.6.0 or newer. This can change: a vulnerability disclosed tomorrow can affect 0.6.0 too — Vulert watches the package and alerts you if that happens. Monitor it with Vulert →

  • Current release 0.6.0 — unaffected i
  • Vulnerabilities on record 1 over 1 year · 0 in the last year i
  • Latest disclosure 09 Oct 2018 i
  • Highest CVSS 9.8 i
  • With no published fix 0 i
  • Depended on by 156,351 packages i
  • Stars 201 i
  • OpenSSF scorecard 1/10 i
  • Last release 101 months ago i
  • Licence MIT i

Version list, release dates, licence and dependants published by the npm registry, 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 deep-extend, 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
0.6.0 22 May 2018 none MIT — Details →
0.5.1 28 Apr 2018 none MIT — Details →
0.5.0 11 May 2017 C1 MIT Yes Details →
0.4.2 11 May 2017 C1 MIT Yes Details →
0.4.1 16 Jan 2016 C1 MIT Yes Details →
0.4.0 01 May 2015 C1 MIT Yes Details →
0.3.3 28 Mar 2015 C1 MIT Yes Details →
0.3.2 03 Oct 2014 C1 MIT Yes Details →
0.3.1 03 Oct 2014 C1 MIT Yes Details →
0.3.0 03 Oct 2014 C1 MIT Yes Details →
0.2.11 28 Jul 2014 C1 MIT Yes Details →
0.2.10 27 May 2014 C1 MIT Yes Details →
0.2.9 27 May 2014 C1 MIT Yes Details →
0.2.8 01 Feb 2014 C1 MIT Yes Details →
0.2.7 01 Feb 2014 C1 MIT Yes Details →
0.2.6 26 Aug 2013 C1 MIT Yes Details →
0.2.5 13 Nov 2012 C1 MIT Yes Details →
0.2.4 13 Nov 2012 C1 MIT Yes Details →
0.2.2 11 Apr 2012 C1 MIT Yes Details →
0.2.1 29 Mar 2012 C1 MIT Yes Details →
0.2.0 29 Mar 2012 C1 MIT Yes Details →

All 21 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 1

Counted by the year Vulert recorded each vulnerability — the same date the table below shows as disclosed. 0 of the 1 were recorded in the last 12 months.

03 Vulnerabilities

Recorded vulnerabilities for deep-extend

The 1 most severe of 1 vulnerabilities recorded for this package

Search all 1 in the database →
Vulnerability Severity Fixed version ↓ Disclosed ↓
CVE-2018-3750: Prototype Pollution in deep-extend 9.8 critical 0.5.1 09 Oct 2018

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 deep-extend

Is deep-extend safe to use?

Vulert records 1 vulnerabilities for deep-extend in npm: 1 critical, 0 high, 0 medium and 0 low. Every one of them has a published fix, so the practical answer is to run a supported release and keep it patched.

What is deep-extend's Vulert package health score?

Vulert scores deep-extend 58/100, 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).

Is the latest version of deep-extend affected?

No. 0.6.0, the version you would install today, has no vulnerabilities on record against it. Earlier releases do — the version table above lists each release with what affects it.

Which version of deep-extend should I use?

0.6.0 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 deep-extend have?

1 vulnerability is recorded for deep-extend in the npm ecosystem: 1 critical, 0 high, 0 medium and 0 low. The ledger on this page lists the same counts next to the date of the most recent disclosure.

How often are new deep-extend vulnerabilities disclosed?

0 vulnerabilities were recorded for deep-extend in the last 12 months, and the oldest entry in this database dates to 09 Oct 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 deep-extend 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 deep-extend for upcoming vulnerabilities?

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