CVE-2018-3721 – lodash

Package

Manager: npm
Name: lodash
Vulnerable Version: >=0 <4.17.5

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

EPSS: 0.00215 pctl0.44065

Details

Prototype Pollution in lodash Versions of `lodash` before 4.17.5 are vulnerable to prototype pollution. The vulnerable functions are 'defaultsDeep', 'merge', and 'mergeWith' which allow a malicious user to modify the prototype of `Object` via `__proto__` causing the addition or modification of an existing property that will exist on all objects. ## Recommendation Update to version 4.17.5 or later.

Metadata

Created: 2018-07-26T15:14:52Z
Modified: 2025-08-12T21:37:06Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2018/07/GHSA-fvqr-27wr-82fm/GHSA-fvqr-27wr-82fm.json
CWE IDs: ["CWE-1321", "CWE-471"]
Alternative ID: GHSA-fvqr-27wr-82fm
Finding: F390
Auto approve: 1