Arbitrary Code Injection Affecting lodash package, versions <4.18.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-JS-LODASH-15869625
- published1 Apr 2026
- disclosed31 Mar 2026
- creditYuki Shiroi, Mundur, dolevmiz1
Introduced: 31 Mar 2026
NewCVE-2026-4800 (opens in a new tab)How to fix?
Upgrade lodash to version 4.18.1 or higher.
Overview
lodash is a modern JavaScript utility library delivering modularity, performance, & extras.
Affected versions of this package are vulnerable to Arbitrary Code Injection due the improper validation of options.imports key names in _.template. An attacker can execute arbitrary code at template compilation time by injecting malicious expressions. If Object.prototype has been polluted, inherited properties may also be copied into the imports object and executed.
Notes:
Version 4.18.0 was intended to fix this vulnerability but it got deprecated due to introducing a breaking functionality issue.
This issue is due to the incomplete fix for CVE-2021-23337.