CVE-2026-46681
@nevware21/ts-utils: Prototype Pollution in objDeepCopy/objCopyProps via for...in without hasOwnProperty
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
@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.
| CWE | CWE-1321 |
| Vendor | nevware21 |
| Product | ts-utils |
| Published | Jul 21, 2026 |
| Last Updated | Jul 21, 2026 |
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Affected Versions
nevware21 / ts-utils
< 0.14.0