VULNERABILITY INTELLIGENCE
CVE-2026-46681
EPSS probability0.36%
CISA KEVNot currently listed
Published2026-07-21
Last modified2026-10-24
Description
@nevware21/ts-utils is a comprehensive TypeScript/JavaScript utility library. Prior to version 0.14.0, the _copyProps function in lib/src/object/copy.ts uses for...in to iterate over source object properties without an Object.hasOwnProperty check, and does not filter dangerous keys (__proto__, constructor, prototype). This allows an attacker to pollute the prototype chain of all objects in the application. Version 0.14.0 patches the issue.
Weakness classification
- security-advisories@github.com: CWE-1321