CVE-2025-3197 – expand-object

Package

Manager: npm
Name: expand-object
Vulnerable Version: >=0 <=0.4.2

Severity

Level: Medium

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

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS: 0.00072 pctl0.22536

Details

expand-object Vulnerable to Prototype Pollution via the expand() Function Versions of the package expand-object from 0.0.0 to 0.4.2 are vulnerable to Prototype Pollution in the expand() function in index.js. This function expands the given string into an object and allows a nested property to be set without checking the provided keys for sensitive properties like __proto__.

Metadata

Created: 2025-04-04T06:34:23Z
Modified: 2025-04-04T18:24:05Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/04/GHSA-4vjr-hfpp-2m7w/GHSA-4vjr-hfpp-2m7w.json
CWE IDs: ["CWE-1321"]
Alternative ID: GHSA-4vjr-hfpp-2m7w
Finding: F390
Auto approve: 1