VULNERABILITY INTELLIGENCE
CVE-2025-31973
CVSS score9.8 CRITICAL
EPSS probability0.42%
CISA KEVNot currently listed
Published2026-05-20
Last modified2026-07-24
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__.