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I. Basic Information for CVE-2026-26021
Vulnerability Information

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Vulnerability Title
Prototype pollution in set-in
Source: NVD (National Vulnerability Database)
Vulnerability Description
set-in provides the set value of nested associative structure given array of keys. A prototype pollution vulnerability exists in the the npm package set-in (>=2.0.1, < 2.0.5). Despite a previous fix that attempted to mitigate prototype pollution by checking whether user input contained a forbidden key, it is still possible to pollute Object.prototype via a crafted input using Array.prototype. This has been fixed in version 2.0.5.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
CWE-1321
Source: NVD (National Vulnerability Database)
Vulnerability Title
set-in 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
set-in是Mikey个人开发者的一个JavaScript库。 set-in 2.0.1至2.0.5之前版本存在安全漏洞,该漏洞源于对用户输入检查不足,可能导致通过特制输入污染Object.prototype的原型污染攻击。
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
VendorProductAffected VersionsCPESubscribe
ahdinosaurset-in >= 2.0.1, < 2.0.5 -
II. Public POCs for CVE-2026-26021
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III. Intelligence Information for CVE-2026-26021
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IV. Related Vulnerabilities
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