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CVE-2026-46681— @nevware21/ts-utils: Prototype Pollution in objDeepCopy/objCopyProps via for...in without hasOwnProperty

Quick assessment

Affected
nevware21 ts-utils
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

NevWare21 Solutions ts-utils是NevWare21 Solutions组织的一款TypeScript工具函数库。 NevWare21 Solutions ts-utils 0.14.0之前版本存在输入验证错误漏洞，该漏洞源于_copyProps函数在迭代源对象属性时未进行Object.hasOwnProperty检查且未过滤危险键（__proto__、constructor、prototype），可能导致攻击者污染应用程序中所有对象的原型链。

AI Predicted 7.5 Difficulty: Easy EPSS 0.36% · P29

Affected Version Matrix 1

VendorProduct Version RangeStatus
nevware21 ts-utils < 0.14.0 affected
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I. Basic Information for CVE-2026-46681

Vulnerability Information
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Vulnerability Title
@nevware21/ts-utils: Prototype Pollution in objDeepCopy/objCopyProps via for...in without hasOwnProperty
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1321
Source: CVE Program / CVE List V5
Vulnerability Title
NevWare21 Solutions ts-utils 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
NevWare21 Solutions ts-utils是NevWare21 Solutions组织的一款TypeScript工具函数库。 NevWare21 Solutions ts-utils 0.14.0之前版本存在输入验证错误漏洞，该漏洞源于_copyProps函数在迭代源对象属性时未进行Object.hasOwnProperty检查且未过滤危险键（__proto__、constructor、prototype），可能导致攻击者污染应用程序中所有对象的原型链。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
nevware21 ts-utils < 0.14.0 -

II. Public POCs for CVE-2026-46681

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III. Intelligence Information for CVE-2026-46681

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Vendor Advisories for CVE-2026-46681 (1)

IV. Related Vulnerabilities

Same weakness: CWE-1321