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CVE-2021-3830— Cross-site Scripting (XSS) - Stored in btcpayserver/btcpayserver

Quick assessment

Affected
btcpayserver btcpayserver/btcpayserver
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

btcpay server是一个免费和开源的比特币支付处理器，它允许您在没有费用或中介的情况下接受比特币。 btcpay server 中存在跨站脚本漏洞。该漏洞源于在网页生成期间容易受到不正确的输入中和（“跨站点脚本”）的影响。

AI Predicted 6.1 Difficulty: Moderate EPSS 0.56% · P45

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2021-3830

Vulnerability Information
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Vulnerability Title
Cross-site Scripting (XSS) - Stored in btcpayserver/btcpayserver
Source: CVE Program / CVE List V5
Vulnerability Description
btcpayserver is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
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: CVE Program / CVE List V5
Vulnerability Title
btcpay server 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
btcpay server是一个免费和开源的比特币支付处理器，它允许您在没有费用或中介的情况下接受比特币。 btcpay server 中存在跨站脚本漏洞。该漏洞源于在网页生成期间容易受到不正确的输入中和（“跨站点脚本”）的影响。
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

Vendor Product Affected Versions CPE Subscribe
btcpayserver btcpayserver/btcpayserver unspecified ~ 1.2.3 -

II. Public POCs for CVE-2021-3830

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III. Intelligence Information for CVE-2021-3830

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Patches & Fixes for CVE-2021-3830 (1)

Vendor Advisories for CVE-2021-3830 (1)

IV. Related Vulnerabilities

Same product: btcpayserver/btcpayserver
Same vendor: btcpayserver
Same weakness: CWE-79

V. Comments for CVE-2021-3830

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