Plattform
other
Komponente
btcpayserver/btcpayserver
Behoben in
1.2.3
CVE-2021-3830 describes a Cross-Site Scripting (XSS) vulnerability affecting btcpayserver versions 1.2.3 and earlier. This vulnerability allows attackers to inject malicious scripts into web pages viewed by other users, potentially leading to data theft or session hijacking. The vulnerability was published on September 26, 2021, and a fix is available in version 1.2.3.
The XSS vulnerability in btcpayserver allows an attacker to inject arbitrary JavaScript code into web pages served by the application. This code can then be executed in the context of a victim's browser, granting the attacker access to sensitive information such as cookies, session tokens, and other user data. An attacker could also use this vulnerability to redirect users to malicious websites, deface the application, or perform other actions on behalf of the victim. The impact is particularly concerning for btcpayserver deployments handling cryptocurrency transactions, as compromised user accounts could lead to financial losses.
CVE-2021-3830 is not currently listed on the CISA KEV catalog. Public proof-of-concept exploits are not widely available, suggesting a low probability of active exploitation at this time. The vulnerability was disclosed publicly on September 26, 2021, alongside the CVE assignment.
Organizations and individuals running btcpayserver versions 1.2.3 or earlier, particularly those handling sensitive financial data or operating in environments with limited security controls, are at risk. Shared hosting environments where multiple users share the same btcpayserver instance are also particularly vulnerable.
• generic web: Use curl/wget to test for reflected XSS payloads in input fields.
curl 'http://btcpayserver/search?q=<script>alert(1)</script>'• generic web: Examine access/error logs for suspicious requests containing JavaScript code. • generic web: Check response headers for Content-Security-Policy (CSP) directives. Lack of CSP increases XSS risk.
disclosure
Exploit-Status
EPSS
0.23% (46% Perzentil)
CVSS-Vektor
The primary mitigation for CVE-2021-3830 is to upgrade btcpayserver to version 1.2.3 or later, which contains the fix. If upgrading immediately is not feasible, consider implementing input validation and output encoding on user-supplied data to prevent the injection of malicious scripts. Web Application Firewalls (WAFs) configured to detect and block XSS payloads can also provide a temporary layer of protection. Regularly review and update your btcpayserver configuration to ensure it adheres to security best practices.
Actualice btcpayserver a la versión 1.2.3 o superior. Esta versión contiene una corrección para la vulnerabilidad de Cross-site Scripting (XSS) almacenado. La actualización mitigará el riesgo de que atacantes inyecten scripts maliciosos en su servidor.
Schwachstellenanalysen und kritische Warnungen direkt in deinen Posteingang.
CVE-2021-3830 is a Cross-Site Scripting (XSS) vulnerability in btcpayserver versions up to 1.2.3, allowing attackers to inject malicious scripts.
You are affected if you are running btcpayserver version 1.2.3 or earlier. Upgrade to 1.2.3 to mitigate the risk.
Upgrade btcpayserver to version 1.2.3 or later. Implement input validation and output encoding as a temporary workaround.
There is no widespread evidence of active exploitation at this time, but vigilance is still advised.
Refer to the btcpayserver project's official release notes and security advisories on their GitHub repository.
Lade deine Abhängigkeitsdatei hoch und erfahre sofort, ob dich diese und andere CVEs treffen.