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I. Basic Information for CVE-2026-25520
Vulnerability Information

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Vulnerability Title
SandboxJS has a Sandbox Escape
Source: NVD (National Vulnerability Database)
Vulnerability Description
SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, The return values of functions aren't wrapped. Object.values/Object.entries can be used to get an Array containing the host's Function constructor, by using Array.prototype.at you can obtain the hosts Function constructor, which can be used to execute arbitrary code outside of the sandbox. This vulnerability is fixed in 0.8.29.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
输出中的特殊元素转义处理不恰当(注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
SandboxJS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SandboxJS是nyariv个人开发者的一个安全评估软件。 SandboxJS 0.8.29之前版本存在安全漏洞,该漏洞源于函数返回值未包装,可能导致沙箱外执行任意代码。
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
nyarivSandboxJS < 0.8.29 -
II. Public POCs for CVE-2026-25520
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III. Intelligence Information for CVE-2026-25520
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IV. Related Vulnerabilities
V. Comments for CVE-2026-25520

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