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CVE-2021-23337 — Command Injection in lodash — CVE Details

HIGH

Command Injection in lodash

Published May 6, 2021Updated September 10, 2026Source: osv

What Should I Do?

Address in Next Maintenance Window

Low exploitation probability (0.74%). Schedule for your next planned update.

Summary

`lodash` versions prior to 4.17.21 are vulnerable to Command Injection via the template function.

Advisory Timeline

  • First published May 6, 2021 (1985 days ago).
  • Last revised September 10, 2026 — 1952 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

npm
Update lodash to 4.17.21 or later
npm install lodash@4.17.21
npm
Update lodash-es to 4.17.21 or later
npm install lodash-es@4.17.21
Bundler
Update lodash-rails to 4.17.21 or later
gem install lodash-rails -v 4.17.21

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (5)

Affects 2 ecosystems: npm (4), rubygems (1).

PackageEcosystemAffectedFixed In
lodash
npm
All versions4.17.21
lodash-es
npm
All versions4.17.21
lodash-rails
rubygems
0.10.0, 0.7.0, 0.8.1, 0.8.2 (+51 more)4.17.21
lodash.template
npm
All versionsRange-based data available
lodash-template
npm
All versionsRange-based data available

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 7.2 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2021-23337?
Command Injection in lodash This vulnerability has been assigned a severity rating of HIGH (CVSS score: 7.2/10).
How do I check if my project is affected by CVE-2021-23337?
CVE-2021-23337 affects lodash, lodash-es and lodash-rails (and 2 more). It has a 0.7% probability of exploitation within 30 days (EPSS score). Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2021-23337 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
7.2

High exploitability or significant impact. Prioritize remediation within days.

EPSS Score (30-day exploit probability)
0.74%
Higher than 73% of vulnerabilities

This is an above-median EPSS score — 72.6% of tracked vulnerabilities score at or below it, putting its exploitation likelihood in the upper half of the tracked corpus.

Also Known As

GHSA-35jh-r3h4-6jhm
CVE-2026-4800
GHSA-r5fr-rjxr-66jc

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