Vulnerability Database · npm · lodash · Version
lodash 4.17.21
4.17.21 is affected by 4 vulnerabilities.
The vulnerabilities that cover this exact version are listed below with the fixed version to move to. The upgrade Vulert recommends: 4.18.1.
Critical 0 High 1 Medium 2 Low 1 Unrated 0
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Released 20 Feb 2021
Licence MIT
Also known from other sources 3
Newer releases 117
Database updated 23/Oct/2026
Release and licence data published by the npm registry. Licence information is not legal advice.
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01 Vulnerabilities affecting this version
lodash 4.17.21 vulnerabilities
4 vulnerabilities cover lodash 4.17.21. Open the full list in the database.
| Vulnerability | Severity | Fixed version | Disclosed |
|---|---|---|---|
| Withdrawn: Arbitrary code execution in lodash | 9.8 low | No fix published | 03 Dec 2021 |
| CVE-2026-4800: lodash Code Injection Vulnerability via `_.template` Imports | 8.1 high | 4.18.0 | 01 Apr 2026 |
| CVE-2026-2950: lodash Prototype Pollution via Array Path Bypass in unset and omit Functions | 6.5 medium | 4.18.0 | 01 Apr 2026 |
| CVE-2025-13465: Lodash Prototype Pollution Vulnerability in `_.unset` and `_.omit` Functions | 6.5 medium | 4.17.23 | 21 Jan 2026 |
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Questions
About lodash 4.17.21
Is lodash 4.17.21 vulnerable?
Yes. 4 vulnerabilities in the Vulert database cover lodash 4.17.21: 0 critical, 1 high, 2 medium and 1 low. The upgrade Vulert recommends is 4.18.1, and each entry above names the fixed version to move to.
Which version of lodash should I use instead of 4.17.21?
4.18.1 is the version Vulert recommends for this release line. The version table on the package page lists every release with the vulnerabilities recorded against it.
Is 4.17.21 the latest release of lodash?
No. 4.17.21 was published 20 Feb 2021, and newer releases exist. Newer is not automatically safer — the version table on the package page shows what each release carries.
How do I monitor lodash for upcoming vulnerabilities?
Upload the manifest or SBOM for your application at vulert.com/scanner and Vulert keeps checking the lodash version you actually run against new disclosures, then alerts you when one affects it. There is no installation and no source-code access required.