CVE-2025-3197

HIGH

expand-object >=0.0.0 - Prototype Pollution via expand() Function

Title source: llm
STIX 2.1

Description

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__.

References (3)

Core 3

Scores

CVSS v3 7.3
EPSS 0.0034
EPSS Percentile 25.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-1321
Status published
Products (2)
n/a/expand-object 0.0.0
npm/expand-object 0npm
Published Apr 04, 2025
Tracked Since Feb 18, 2026