CVE-2025-3197CWE-1321

Versions of the package expand-object from 0.0.0 are vulnerable to Prototype Pollution in the expand() function in index.js

Medium · published April 4, 2025

CVSS v4.0
6.9
EPSS
0%
Percentile
34.7
In the wild
Unconfirmed
What it is

Versions of the package expand-object from 0.0.0 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__.

The record
Technical detail
CVSS v4.0
6.9 · MEDIUM
Vector
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
EPSS
0.00415 · 34.7th percentile
Weakness
CWE-1321 · Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Published
2025-04-04T05:00Z
EPSS history
Timeline
  • 04 APR 05:00Z
    Versions of the package expand-object from 0.0.0 are vulnerable to Prototype Pollution in the expand() function in index.js
    cvelistv5