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I. Basic Information for CVE-2021-39146
Vulnerability Information

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Vulnerability Title
XStream is vulnerable to an Arbitrary Code Execution attack
Source: NVD (National Vulnerability Database)
Vulnerability Description
XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
危险类型文件的不加限制上传
Source: NVD (National Vulnerability Database)
Vulnerability Title
XStream 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
XStream是XStream(Xstream)团队的一个轻量级的、简单易用的开源Java类库,它主要用于将对象序列化成XML(JSON)或反序列化为对象。 XStream 1.4.18之前版本存在代码问题漏洞,攻击者可利用该漏洞通过操纵已处理的输入流从远程主机加载和执行任意代码
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
x-streamxstream < 1.4.18 -
II. Public POCs for CVE-2021-39146
#POC DescriptionSource LinkShenlong Link
1XStream 1.4.18 is susceptible to remote code execution. An attacker can execute commands of the host by manipulating the processed input stream, thereby making it possible to obtain sensitive information, modify data, and/or execute unauthorized administrative operations in the context of the affected site. Setups which followed XStream's security recommendations with an allow-list are not impacted. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-39146.yamlPOC Details
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III. Intelligence Information for CVE-2021-39146
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IV. Related Vulnerabilities
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