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I. Basic Information for CVE-2020-7777
Vulnerability Information

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Vulnerability Title
Arbitrary Code Execution
Source: NVD (National Vulnerability Database)
Vulnerability Description
This affects all versions of package jsen. If an attacker can control the schema file, it could run arbitrary JavaScript code on the victim machine. In the module description and README file there is no mention about the risks of untrusted schema files, so I assume that this is applicable. In particular the required field of the schema is not properly sanitized. The resulting string that is build based on the schema definition is then passed to a Function.apply();, leading to an Arbitrary Code Execution.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Bugventure Jsen 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Bugventure Jsen是Bugventure个人开发者的一个用于校验Json对象的 Js 软件包。 jsen 存在安全漏洞,攻击者可利用该漏洞可以控制模式文件,那么它可以在受害机器上运行任意的JavaScript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
-jsen 0 ~ unspecified -
II. Public POCs for CVE-2020-7777
#POC DescriptionSource LinkShenlong Link
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Qwen3.6-35B-A3B · 9393 chars
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III. Intelligence Information for CVE-2020-7777
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IV. Related Vulnerabilities
V. Comments for CVE-2020-7777

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