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I. Basic Information for CVE-2021-21332
Vulnerability Information

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Vulnerability Title
Cross-site scripting (XSS) vulnerability in the password reset endpoint
Source: NVD (National Vulnerability Database)
Vulnerability Description
Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.27.0, the password reset endpoint served via Synapse was vulnerable to cross-site scripting (XSS) attacks. The impact depends on the configuration of the domain that Synapse is deployed on, but may allow access to cookies and other browser data, CSRF vulnerabilities, and access to other resources served on the same domain or parent domains. This is fixed in version 1.27.0.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Apache Synapse 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Synapse是美国阿帕奇(Apache)基金会的一款轻量级ESB(企业服务总线)。 Apache Synapse before version 1.27.0 存在跨站脚本漏洞,该漏洞允许访问cookie和其他浏览器数据。
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
matrix-orgsynapse < 1.27.0 -
II. Public POCs for CVE-2021-21332
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III. Intelligence Information for CVE-2021-21332
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IV. Related Vulnerabilities
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